## 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

## Recommended Posts

## Fibonacci Series | Fibonacci Series in C | @lapmos

Fibonacci numbers ( sequence ) is a set of numbers that start with 1 or 0 followed by a 1 proceeds on the rule that each number.

## Palindrome | Palindrome program in c | Palindrome Number

Write a program in c to check that the given number is palindrome or not?

## Pascal Triangle | C programming

pascal triangle program in c | Write a c program to print the pascal triangle.

## Leap Year | Leap year program in c

Year is divisible by completely 4,100,400 then called that year is leap year.

## Perfect Number in C Programming

What is Perfect Number? Perfect Number is a positive integer number that is equal to the sum of the its possible factors.

For Example : 6 is a Perfect Number

## Strong Number in C programming | What is Strong Number

Strong Number is a number whose sum of the factorial of digits of number is equal to given number.

For Example : 145 is a strong number.