Swap values of 2 variables without using 3rd variable

Swap values of 2 variables without using 3rd variable

Program:

#include<stdio.h>

void main()

{

int m,n;

printf(“Enter numbers: ”);

scanf(“%d%d”,&m,&n);                       //Suppose values of m and n are: m=5 n=3 //

printf("Values of numbers before swapping is: %d and %d\n”,m,n);

m=m+n;                                  //m=8 n=3//

n=m-n;                                   //m=8 n=5//

m=m-n;                                 //m=3 n=5 Thus, we get desired output//

printf("Values of numbers after swapping is: %d and %d\n”,m,n);

}

Output: