## Description

Swap two number without using third variable in c programming language.

For Example :
INPUT :
a = 10;
b = 20;
OUTPUT :
a = 20;
b = 10;

Welcome guys..

We will be write the program in c how to swap two number without using third variable.

Let's start the code..

``````#include <stdio.h>

int main()
{

int a, b;
printf("Enter the value of a : ");
scanf("%d", &a);

printf("Enter the value of b : ");
scanf("%d", &b);

a = a + b;
b = a - b;
a = a - b;

printf("The value of a is %d and b is %d", a, b);

return 0;
}
``````

Output :

Enter the value of a : 10
Enter the value of b : 20
The value of a is 20 and b is 10

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