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

int main()
{
  /*variable1 = 20;
  variable2 = 40;

  aux = variable1;
  variable1 = variable2;
  variable2 = aux;*/

  int a, b, aux, suma, resta, division, mult;

  printf("Ingresar numero 1: ");
  scanf("%d", &a);

  printf("Ingresar numero 2: ");
  scanf("%d", &b);

  printf("El valor de la variable 2 cambio a %d y el valor de la variable 1 es %d", a, b);

  aux = a;
  a = b;
  b = aux;

  suma = a + b;
  resta = a - b;
  division = a / b;
  mult = a * b;

  printf(" Suma: %d\n Resta: %d\n Division: %d\n Multiplicacion: %d\n", suma, resta, division, mult);

  system("PAUSE");
}