Swap of two no’s without using third variable.

 

#include <stdio.h>

int main()

{

    int num1,num2;

    printf("enter the value of num1 and num2 ");

    scanf("%d %d",&num1,&num2);

    num1=num1+num2;

    num2=num1-num2;

    num1=num1-num2;

    printf("swap value of num1 is %d\n",num1);

    printf("swap value of num2 is %d",num2);

    return 0;

 }