/* Program like a calculator. */

#include <stdio.h>
#include <stdlib.h>

int a,b,r;
char operator;
char answer = 'y';


main()
{
  system("clear");
  while(answer == 'y')
  {
    printf("¿Do you want to do a new operation?: ");
    scanf("%s", &answer);
    if (answer == 's')
    {
      printf("Introduce a number: ");
      scanf("%i", &a);
      printf("Introduce the operation you want to do: ");
      scanf("%s", &operador);
      printf("Introduce another number: ");
      scanf("%i", &b);
      switch(operator)
      {
        case '+':
         r = a + b;
         break;
        case '-':
         r = a - b;
         break;
        case 'x':
         r = a * b;
         break;
        case '/':
         r = a / b;
         break;
        default:
         printf("No válid Operation. \n");
         break;
      }
      printf("The result of your operation is: %d\n", r);
    }
  }
  printf("Thank you for use me. \n");
}