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En este Blog encontrarás información sobre Códigos de Programación, desde los más básicos hasta los más complejos. Todos los lenguajes que encontraras en este blog están programados en el Lenguaje C. Para aprender a programar debes empezar por la práctica en el lenguaje C, debes aprender a manejar el lenguaje de programación para que se les haga más fácil entender como relaciona y cuál es la función de los códigos. El lenguaje C, maneja los elementos básicos del ordenador como caracteres, números y direcciones de memoria, dispone de librerías de funciones externas al lenguaje la cual lo convierte en portable independientemente de la maquina que ejecuta el programa.

MENU

viernes, 16 de noviembre de 2018

Código en C, Coleccion de 25 Programas Usando Arrays

/* FUNCIONES DE ARRAYS*/

#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>

struct producto {
    char nombre[50];
    float precio;
    int cantidad;
};

struct alumno {
    char nombre[50];
    float nota;
};


int main (){
            int op;
            do{
                        printf("**************** MENU PRINCIPAL *****************\n");
                        printf("1- Numeros enteros de 1 a 100 en orden ascendente\n");
                        printf("2- Numeros enteres de 1 a 100 en orden descendente\n");
                        printf("3- Numeros primos de 1 a 100 en orden ascendente\n");
                        printf("4- Numeros pares de 1 a 100 en orden ascendente\n");
                        printf("5- Numeros impares de 1 a 100 orden ascendente\n");
                        printf("6- Numeros: Suma, resta, multiplicacion, division\n");
                        printf("7- 10 numeros que los ordene de forma ascendente\n");
                        printf("8- 10 numeros por teclado, 5 distintos por array\n");
                        printf("9- 5 numeros tecleados multiplicados por dos\n");
                        printf("10- 5 numeros multiplicados por dos ordenados\n");
                        printf("11- Array con 100 numeros pares, muestre su suma\n");
                        printf("12- 10 numeros tecleados y que muestre la media\n");
                        printf("13- Muestre numeros positivos y negativos por array\n");
                        printf("14- Array con 20 numeros y luego busque un numero\n");
                        printf("15- Programa que pinte un tablero de ajedrez\n");
                        printf("16- Muestre 100 numeros de izquierda a derecha\n");
                        printf("17- 100 numeros de izquierda a derecha 2 dimensiones\n");
                        printf("18- Rellene array de dos dimensiones con numeros pares\n");
                        printf("19- Rellene una matriz de 3x3 y muestre su respuesta\n");
                        printf("20- Que lea una cadena y la muestre al revés\n");
                        printf("21- Que lea una cadena y diga cuantas vocales hay\n");
                        printf("22- Que lea una cadena y diga cuantas mayúsculas hay\n");
                        printf("23- Que lea una cadena y encripte sumando 3 al codigo ASCII\n");
                        printf("24- Que gestione los datos de stock de una tienda\n");
                        printf("25- Que gestiona las notas de una clase de 20 alumnos\n");
                        printf("\n");
                        printf("\n");
                        printf("-------------------- 26 SALIR --------------------\n");
                        printf("\n");
                        printf("----------------- INGRESE SU OPCION --------------\n");
                        printf("\n");
                        scanf("%d",&op);
                        switch (op){
                                   case 1:
                                               {
                                   int x,tabla[100];
          
                                   for (x=1;x<=100;x++)
                                   {          
                                               tabla[x]=x;
                                               }
          
                                   for (x=1;x<=100;x++)
                                   {
                                               printf("%d\n",tabla[x]);
                                               }
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;  
                                               }

                                               break;
                                   case 2:
                                               {
                                   int x,tabla[100];
          
                                   for (x=1;x<=100;x++)
                                   {
                                   tabla[x]=x;
                                               }
          
                                   for (x=100;x>=1;x--)
                                   {
                                   printf("%d\n",tabla[x]);
                                               }
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 3:
                                               {
                                   int x,cont,z,i,tabla[100];
          
                                   i=0;
                                   for (x=1;x<=100;x++)
                                   {
                                   cont=0;
                                   for (z=1;z<=x;z++)
                                   {
                                   if (x%z==0)
                                   {
                                   cont++;
                                   }
                                   }
      
                                   if (cont==2 || z==1 || z==0)
                                   {
                                   tabla[i]=x;
                                   i++;
                                               }
                                              
                                                           }
          
                                   for (x=0;x<i;x++)
                                   {
                                               printf("%d\n",tabla[x]);
                                               }
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 4:
                                               {
                                   int x,cont,z,i,tabla[100];
          
                                   i=0;
                                   for (x=1;x<=100;x++)
                                   {
                                   cont=0;
                                   if (x%2==0)
                                   {
                                   tabla[i]=x;
                                   i++;
                                   }
                                               }
          
                                   for (x=0;x<i;x++)
                                   {
                                   printf("%d\n",tabla[x]);
                                               }
          
                                               system("PAUSE");
                                               printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                   case 5:
                                               {
                                   int x,cont,z,i,tabla[100];
          
                                   i=0;
                                   for (x=1;x<=100;x++)
                                   {
                                   cont=0;
                                   if (x%2==1)
                                   {
                                   tabla[i]=x;
                                   i++;
                                   }
                                               }
          
                                   for (x=0;x<i;x++)
                                   {
                                   printf("%d\n",tabla[x]);
                                               }
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;       
                                               }

                                               break;
                                   case 6:
                                               {
                                   int x,tabla[10];
                                   int sum,res,mul;
                                                           float div;
          
                                   for (x=0;x<10;x++)
                                   {
                                   printf("Introduzca numero\n");
                                   scanf("%d",&tabla[x]);
                                               }
                                               printf ("\n");
          
                                   sum=tabla[0];
                                               res=tabla[0];
                                               mul=tabla[0];
                                               div=tabla[0];
          
                                   for (x=1;x<10;x++)
                                   {
                                   sum=sum+tabla[x];
                                   res=res-tabla[x];
                                   mul=mul*tabla[x];
                                   div=(float)div/tabla[x];
                                               }
          
                                               printf("Suma: %d\n",sum);
                                               printf("Resta: %d\n",res);
                                               printf("Multiplicacion: %d\n",mul);
                                               printf("Division: %f\n",div);
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 7:
                                               {
                                                           float aux, numeros[10];
                                                           int i,j,n=10;

                                                           for (i=0;i<n;i++){
                    printf("Escriba un numero\n");
                    scanf("%f",&numeros[i]);
                                               }
                                               printf ("\n");

                                                           for(i=0;i<n-1;i++)
                                                           {
                                                           for(j=i+1;j<n;j++)
                                                           {
                                               if(numeros[i]<numeros[j])
                                               {
                                   aux=numeros[i];
                                   numeros[i]=numeros[j];
                                   numeros[j]=aux;
                                               }
                                                           }
                                                           }

                                                           for (i=n-1;i>=0;i--){
                                               printf("%f\n",numeros[i]);
                                                           }
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                   case 8:
                                               {
                                                           int aux, numeros1[5],numeros2[5],numeros3[10];
                                                           int i,j;

                                                           for (i=0;i<5;i++){
                    printf("Escriba un numero\n");
                    scanf("%d",&numeros1[i]);
                                               }
    
                                                           for (i=0;i<5;i++){
                    printf("Escriba un numero\n");
                    scanf("%d",&numeros2[i]);
                                               }
                                               printf ("\n");

                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros3[i]=numeros1[i];
                                                           }

                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros3[5+i]=numeros2[i];
                                                           }

                                                           for (i=0;i<10;i++){
                                               printf("%d\n",numeros3[i]);
                                                           }
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;  
                                               }

                                               break;
                                   case 9:
                                               {
                                                           int aux, numeros1[5],numeros2[5];
                                                           int i,j;
           
                                                           for (i=0;i<5;i++){
                    printf("Escriba un numero\n");
                    scanf("%d",&numeros1[i]);
                                               }
                                               printf ("\n");
    
                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros2[i]=numeros1[i]*2;
                                                           }

                                                           for (i=0;i<5;i++){
                                               printf("%d\n",numeros2[i]);
                                                           }
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;   
                                               }

                                               break;
                                   case 10:
                                               {
                                                           int aux, numeros1[5],numeros2[5],numeros3[10];
                                                           int i,j;

                                                           for (i=0;i<5;i++){
                    printf("Escriba un numero\n");
                    scanf("%d",&numeros1[i]);
                                               }
                                               printf ("\n");
    
                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros2[i]=numeros1[i]*2;
                                                           }

                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros3[i]=numeros1[i];
                                                           }

                                                           for(i=0;i<5;i++)
                                                           {
                                                           numeros3[5+i]=numeros2[i];
                                                           }

                                                           for (i=0;i<10;i++){
                                               printf("%d\n",numeros3[i]);
                                                           }
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;   
                                               }

                                               break;
                                   case 11:
                                               {
                                   int x,cont,sum,i,tabla[100];
          
                                   i=0;
                                   sum=0;
                                   for (x=1;x<=100;x++)
                                   {
                                   cont=0;
                                   if (x%2==0)
                                   {
                                   tabla[i]=x;
                                   i++;
                                   }
                                               }
          
                                   for (x=0;x<i;x++)
                                   {
                                   sum=sum+tabla[x];
                                               }
  
                                               printf("%d\n",sum);
          
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 12:
                                               {
                                                           float sum, numeros1[10];
                                                           int i;

                                                           sum=0;
                                                           for (i=0;i<10;i++){
                    printf("Escriba un numero\n");
                    scanf("%f",&numeros1[i]);
                                               }
                                               printf ("\n");
    
                                                           for(i=0;i<10;i++)
                                                           {
                                                           sum=sum+numeros1[i];
                                                           }

                                                           printf("%f\n",sum/10);
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                   case 13:
                                               {
                                                           float aux, numeros[10];
                                                           int i,j,n=10;

                                                           for (i=0;i<n;i++){
                    printf("Escriba un numero\n");
                    scanf("%f",&numeros[i]);
                                               }
                                               printf ("\n");

                                                           for(i=0;i<n-1;i++)
                                                           {
                                                           for(j=i+1;j<n;j++)
                                                           {
                                               if(numeros[i]<numeros[j])
                                               {
                                               aux=numeros[i];
                                               numeros[i]=numeros[j];
                                               numeros[j]=aux;
                                               }
                                                           }
                                                           }

                                                           for (i=n-1;i>=0;i--){
                                                printf("%f\n",numeros[i]);
                                                           }
    
                                                           system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;  
                                               }

                                               break;
                                   case 14:
                                               {

                                               int  i,x=0,vector[20], n=20, dato, centro,inf=0,sup=n-1;
                                               for (i=0;i<20;i++){
                                   printf("Escriba un numero\n");
                                   scanf("%d",&vector[i]);
                                               }
                                               printf("Escriba el numero a buscar\n");
                                               scanf("%d",&dato);
                                               while(inf<=sup)
                                               {
                                               centro=(sup+inf)/2;
                                               if (vector[centro]==dato)
                                               {
                                   printf("Existe\n");
                                   x=1;
                                               break;
                                               }
                                               else if(dato < vector [centro] )
                                               {
                                   sup=centro-1;
                                               }
                                               else
                                               {
                                               inf=centro+1;
                                               }
                                               }
  
                                               if (x==0)
                                               {
                                               printf("No existe\n");    
                                               }
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;     
                                               }

                                               break;
                                   case 15:
                                               {

                                               int x,y;
  
                                               for (x=0;x<8;x++)
                                               {
                                   for (y=0;y<8;y++)
                                   {
                                               //peones
                                   if (x==1 || x==6)
                                   {
                                               printf("P");
                                   }
                                               //torres
                                   else if ((x==0 && y==0) ||
                    (x==7 && y==0) ||
                    (x==0 && y==7) ||
                    (x==7 && y==7)
                    )
                                   {
                                   printf("T");
                                   }
                                               //caballos
                                   else if ((x==0 && y==1) ||
                    (x==7 && y==1) ||
                    (x==0 && y==6) ||
                    (x==7 && y==6)
                    )
                                   {
                                   printf("C");
                                   }
                                               //alfiles
                                   else if ((x==0 && y==2) ||
                    (x==7 && y==2) ||
                    (x==0 && y==5) ||
                    (x==7 && y==5)
                    )
                                   {
                                   printf("A");
                                   }
                                               //reina
                                   else if ((x==0 && y==3) ||
                    (x==7 && y==3)
                    )
                                   {
                                   printf("M");
                                   }
                                               //rey
                                   else if ((x==0 && y==4) ||
                    (x==7 && y==4)
                    )
                                   {
                                   printf("R");
                                   }
                                   else
                                   {
                        printf(" ");
                                   }
                                   }
                                   printf("\n");
                                               }
  
                                                system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 16:
                                               {

                                               int x,y, numeros[10][10];
  
                                               for (x=0;x<10;x++)
                                               {
                                   for (y=0;y<10;y++)
                                   {
                                   numeros[x][y]=(x*10)+1+y;
                                   }
      
                                               }
  
                                               for (x=0;x<10;x++)
                                               {
                                   for (y=0;y<10;y++)
                                   {
                                   printf("%d ",numeros[x][y]);
                                   }
                                   printf("\n");
                                               }
  
                                               system("PAUSE");
                                               printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                   case 17:
                                               {

                                               int x,y,sum, numeros[11][10];
  
                                               for (y=0;y<10;y++)
                                               {
                                   sum=0;
                                   for (x=0;x<10;x++)
                                   {
                                   numeros[x][y]=(x*10)+1+y;
                                   sum=sum+numeros[x][y];
                                   }
                                   numeros[10][y]=sum;
                                               }
  
                                               for (x=0;x<11;x++)
                                               {
                                   for (y=0;y<10;y++)
                                   {
                                   printf("%d ",numeros[x][y]);
                                   }
                                   printf("\n");
                                               }
  
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    

                                               }

                                               break;
                                   case 18:
                                               {

                                               int x,y,num=2, numeros[3][3];
  
                                               for (x=0;x<3;x++)
                                               {
                                   for (y=0;y<3;y++)
                                   {
                                   numeros[x][y]=num;
                                   num=num*2;
                                   }
                                               }
  
                                               printf("Introduzca coordenada x: ");
                                               scanf("%d",&x);
                                               printf("Introduzca coordenada y: ");
                                               scanf("%d",&y);
  
                                               printf("El numero es: %d\n",numeros[x][y]);
  
                                               system("PAUSE");
                                               printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                   case 19:
                                               {

                                               int x,y,num=0, numeros[4][4];
  
                                               for (x=0;x<3;x++)
                                               {
                                   for (y=0;y<3;y++)
                                   {
                                   numeros[x][y]=num;
                                   num++;
                                   }
                                               }
  
                                               printf("El array original es: \n\n\n");
  
                                               for(x = 0;x < 3;x++)
                                               {
                                               for(y = 0;y < 3;y++)
                                               {
                                   printf("    %d     ", numeros[x][y]);
                                               }
                                               printf("\n\n\n");
                                               }
  
                                               printf("La traspuesta es: \n\n\n");
  
                                               for(x = 0;x < 3;x++)
                                               {
                                               for(y = 0;y < 3;y++)
                                               {
                                   printf("    %d     ", numeros[y][x]);
                                               }
                                               printf("\n\n\n");
                                               }
  
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;   
   
                                               }

                                               break;
                                   case 20:
                                               {

                                                   int indice,x;
                                                   char frase[50];
  
                                                   printf("Introduzca una frase: ");
                                                   scanf("%s",frase);
  
                                                   for(x = 0;x < 50;x++)
                                                   {
                                                   if (frase[x]=='\0')
                                                   {
                                                   indice=x;
                                                   break;
                                                   }
                                                   }
                                                 
                                                   printf("La frase al reves es: \n\n");
  
                                                   for(x = indice-1;x >=0;x--)
                                                   {
                                                   printf("%c",frase[x]);
                                                   }
                                                 
                                                   printf("\n\n");
                                                 
                                                   system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;     
                                               }

                                               break;
                                   case 21:
                                               {

                                                   int sum=0,x;
                                                   char frase[50];
                                                 
                                                   printf("Introduzca una frase: \n");
                                                   scanf("%s",frase);
                                                 
                                                   for(x = 0;x < 50;x++)
                                                   {
                                                   switch (frase[x])
                                                   {
                                                   case 'a':
                                                   sum++;
                                                   break;
                                                   case 'e':
                                                   sum++;
                                                   break;
                                                   case 'i':
                                                   sum++;
                                                   break;
                                                   case 'o':
                                                   sum++;
                                                   break;
                                                   case 'u':
                                                   sum++;
                                                   break;           
                                                   default:
                                                   break;
                                                     }
                                                   
                                                   }
                                                 
                                                   printf("\n\nEn la frase hay %d vocales\n\n",sum);
                                                 
                                                   printf("\n\n");
                                                 
                                                   system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;    
                                               }

                                               break;
                                   case 22:
                                               {
                                               int sum=0,x, len;
                                               char frase[50];
  
                                                   printf("Introduzca una frase: ");
                                                   scanf("%s",frase);
                                                   len = strlen(frase);
                                                   char frase2[len];
  
                                                   for(x = 0;x < len;x++)
                                                   {
                                                   if (frase[x]>=65 && frase[x]<=90)
                                                   {
                                               sum++;
                                               }
                                               }
  
                                                   printf("\n\nEn la frase hay %d mayusculas\n\n",sum);
                                                 
                                                   printf("\n\n");
                                                 
                                                   system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;   
                                               }

                                               break;
                                   case 23:
                                               {
                                               int sum=0,x;
                                               char frase[50];
  
                                                   printf("Introduzca una frase: \n");
                                                   scanf("%s",frase);
  
                                                   for(x = 0; x < 50;x++)
                                                   {
                                               if (frase[x]!='\0')
                                               {
                                               frase[x]=frase[x]+3;
                                               }
                                               }
  
                                                   printf("\n\nLa nueva frase es:\n\n",sum);
                                                   printf("\n\n%s\n\n",frase);
                                                   printf("\n\n");
                                                 
                                                   system("PAUSE");    
                                                   printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;
                                               }

                                               break;
                                              
                                   case 24:
                                               {
                                               struct producto prod,productos[10];
  
                                               int x,opcion=1;
  
                                               for (x=0;x<10;x++)
                                   {
                                   strcpy(productos[x].nombre,"X");
                                   productos[x].precio=0;
                                   productos[x].cantidad=0;
                                   }
  
                                               while ((opcion==1 || opcion==2 || opcion==3) && (opcion!=4))
                                               {
  
                                           printf("1- Alta de producto\n");
                                           printf("2- Buscar por nombre\n");
                                           printf("3- Modificar stock y precio\n");
                                           printf("4- Salir\n");
                                           printf("Introduzca una opcion:\n ");
                                           scanf("%d",&opcion);
              
                                   if (opcion==1)
                                   {
                                    printf("Introduzca un nombre:\n ");
                                   gets(prod.nombre);
                                   gets(prod.nombre);
                                   printf("Introduzca un precio: \n");
                                   scanf("%f",&prod.precio);
                                   printf("Introduzca un stock: \n");
                                   scanf("%d",&prod.cantidad);
         
                                   for(x = 9; x >=0; x--)
                                   {
                                   if (x!=0)
                                   {
                            strcpy(productos[x].nombre,productos[x-1].nombre);
                            productos[x].precio=productos[x-1].precio;
                            productos[x].cantidad=productos[x-1].cantidad;
                                   }
                                   else
                                   {
                                    strcpy(productos[x].nombre,prod.nombre);
                                    productos[x].precio=prod.precio;
                                    productos[x].cantidad=prod.cantidad;
                                   }
                                   }
                                   printf("\nProducto creado. \n\n");
                                   }
                                   else if (opcion==2)
                                   {
                                   printf("Introduzca un nombre: \n");
                                   gets(prod.nombre);
                                   gets(prod.nombre);

                                   for(x = 0; x < 10;x++)
                                   {
               
                                   if (strcmp(productos[x].nombre,prod.nombre)==0)
                                   {
                                   printf("\nNombre: %s\n",productos[x].nombre);
                                   printf("Precio: %f\n",productos[x].precio);
                                   printf("Cantidad en Stock: %d\n",productos[x].cantidad);
                                   }
                                   }
                                   printf("\n\n");
                                   }
                                   else if (opcion==3)
                                   {
                                   printf("Introduzca un nombre:\n ");
                                   gets(prod.nombre);
                                   gets(prod.nombre);

                                   for(x = 0; x < 10;x++)
                                   {
                                   if (strcmp(productos[x].nombre,prod.nombre)==0)
                                   {
                                   printf("Introduzca un precio:\n ");
                                   scanf("%f",&productos[x].precio);
                                   printf("Introduzca un stock: \n");
                                   scanf("%d",&productos[x].cantidad);
                                   printf("\nProducto modificado:\n");
                                   }
                                   }
                                   printf("\n\n");
                                   }
                                               }
      
  
                                               system("PAUSE");
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;  
           
                                               }

                                               break;
                                   case 25:
                                               {
                                               struct alumno alum,alumnos[5];
  
                                               int x,opcion=1;
                                               float sum=0,cont=0,mejor,peor;
  
  
                                               for (x=0;x<5;x++)
                                               {
                                           printf("Introduzca nombre alumno:");
                                           gets(alumnos[x].nombre);
                                           gets(alumnos[x].nombre);
                                           printf("Introduzca nota:");
                                           scanf("%f",&alumnos[x].nota);
                                                           }          
  
                                               while ((opcion==1 || opcion==2 ||
                                    opcion==3 || opcion==4 ||
                                    opcion==5 || opcion==6) && (opcion!=7))
                                               {
  
                                           printf("1- Buscar un alumno\n");
                                           printf("2- Modificar nota\n");
                                           printf("3- Media de todas las notas\n");
                                           printf("4- Media de todas las notas inferiores a 5\n");
                                           printf("5- Alumno con mejores notas\n");
                                           printf("6- Alumno con peores notas\n");
                                           printf("7- Salir\n");
                                           printf("Introduzca una opcion: ");
                                           scanf("%d",&opcion);
              
                                   if (opcion==1)
                                   {
                                           printf("Introduzca un nombre: ");
                                           gets(alum.nombre);
                                           gets(alum.nombre);
         
                                   for(x = 0; x < 5;x++)
                                   {
                                   if (strcmp(alumnos[x].nombre,alum.nombre)==0)
                                   {
                                   printf("\nNombre: %s\n",alumnos[x].nombre);
                                   printf("Nota: %f\n",alumnos[x].nota);
                                   }
                                   }
                                   printf("\n\n");
                                   }
                                   else if (opcion==2)
                                   {
                                           printf("Introduzca un nombre: ");
                                           gets(alum.nombre);
                                           gets(alum.nombre);

                                   for(x = 0; x < 5;x++)
                                   {
                                   if (strcmp(alumnos[x].nombre,alum.nombre)==0)
                                   {
                                    printf("Introduzca una nota: ");
                                    scanf("%f",&alumnos[x].nota);
                                    printf("\nNota modificada:");
                                   }          
                                   }
                                   printf("\n\n");
                                   }
                                   else if (opcion==3)
                                   {
                                           sum=0;
                                           for(x = 0; x < 5;x++)
                                   {
                                    sum=sum+alumnos[x].nota;
                                   }
                                   printf("\nLa media de las notas es de: %f \n",(sum/5));
                                   }
                                   else if (opcion==4)
                                   {
                                           sum=0;
                                           cont=0;
                                   for(x = 0; x < 5;x++)
                                   {
                                   if (alumnos[x].nota<5)
                                   {
                                   sum=sum+alumnos[x].nota;
                                   cont++;
                                   }
                                   }
                                   printf("\nLa media de las notas inferiores a 5 es: %f \n",sum/cont);
                                   }
                                   else if (opcion==5)
                                   {
                                   mejor=0;
                                   for(x = 0; x < 5;x++)
                                   {
                                   if (alumnos[x].nota>mejor)
                                   {
                                   mejor=alumnos[x].nota;
                                   alum.nota=alumnos[x].nota;
                                   strcpy(alum.nombre,alumnos[x].nombre);
                                   }
                                   }
                                   printf("\nEl alumno con mejores notas es: %s \n",alum.nombre);
                                   }
                                   else if (opcion==6)
                                   {
                                   peor=10;
                                   for(x = 0; x < 5;x++)
                                   {
                                   if (alumnos[x].nota<peor)
                                   {
                                   peor=alumnos[x].nota;
                                   alum.nota=alumnos[x].nota;
                                   strcpy(alum.nombre,alumnos[x].nombre);
                                   }
                                   }
                                   printf("\nEl alumno con peores notas es: %s \n",alum.nombre);
                                   }
                                               }
      
  
                                               system("PAUSE");   
                                                           printf("Ingrese opcion\n");
                                                           printf("Ingrese 1 para continuar\n");
                                                           printf("Ingrese 2 para salir del programa\n");
                                                           scanf("%d",&op);
                                                           if (op==2)
                                                                       op=26;  
                                               }

                                               break;
                                  
                        }
            }
            while(op!=26);
            return 0;
}

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CONCLUSIONES

C, Es uno de los lenguajes más utilizados a nivel mundial, cualquier persona que sea capaz de dominar este lenguaje se le hará fácil manejar la habilidad de programar, es importante para las personas tener conocimiento sobre este lenguaje ya que nos permite aprender la habilidad de razonamiento lógico que se necesita para programar. Es utilizado en la mayoría de las aplicaciones hoy en día, es un lenguaje de programación óptimo, claro y preciso que promete a la persona con un poco de práctica y perseverancia, la realización de programas sencillos usando lenguajes como if, switch, float, entre otras.

RECOMENDACIONES

Es muy importante tener claro sobre el lenguaje de programación C, para poder llevar bien a la práctica los programas que realicen, si se te hace muy complicado entenderle puedes guiarte por otros medios como viendo tutoriales en YouTube, existen también páginas en internet donde puedes encontrar información. Ante todo es importante dedicar un tiempo a la práctica de ejercicios, si se te complica y tienes por donde investigar cualquier duda que tengas, existen medios donde encontraras respuestas y aprenderás fácilmente.