#include<stdio.h>

void main()
{
  int val1, val2;
  int sum, diff;

  val1=10;
  val2=15;

  sum=val1+val2;
  diff=val1-val2; // difference

  printf("\n Sum of %d and %d is %d \n", val1, val2, sum);
  printf("\n Difference of %d and %d is %d \n", val1, val2, diff);


}