C Language - Write a program to swap the values of two variables without using a third variable

Question: Write a program to swap the values of two variables without using a third variable.

Solution :

C Language

#include <stdio.h>

#include <conio.h>

void main()

{

            int a,b;

            clrscr();

            printf("\nENTER TWO NUMBERS FOR a AND b:\n");

            scanf("%d %d",&a,&b);

            printf("\nBEFORE SWAPING THE VALUE OF a=%d AND b=%d",a,b);

            a=a+b;

            b=a-b;

            a=a-b;

            printf("\nAFTER SWAPING THE VALUE OF a=%d AND b=%d",a,b);

            getch();

}