C Program to Swap Two Numbers

C Program to Swap Two Numbers

In programming, there are two different techniques to swap any two numbers in a variable, they are

  • Swap using Temporary Variable
  • Swap without using Temporary Variable

Swap using Temporary Variable

In the following example, we will swap two numbers (25 and 50) using a temporary variable (temp).

Example

C Compiler
#include <stdio.h> int main() { int num1 = 25; int num2 = 50; int temp = 0; temp = num1; num1 = num2; num2 = temp; printf("After swapping..."); printf("\nnum1 = %d", num1); printf("\nnum2 = %d", num2); return 0; }

Swap without using Temporary Variable

In the following example, we will swap two numbers (25 and 50) without using a temporary variable.

Example

C Compiler
#include <stdio.h> int main() { int num1 = 25; int num2 = 50; num1 = num1 - num2; num2 = num1 + num2; num1 = num2 - num1; printf("After swapping..."); printf("\nnum1 = %d", num1); printf("\nnum2 = %d", num2); return 0; }

Swap any Two Given Numbers

In the following example, we will swap any two given numbers without using a temporary variable (temp).

Example

C Compiler
#include <stdio.h> int main() { int num1, num2; printf("Enter a (int) Number1: "); scanf("%d", &num1); printf("Enter a (int) Number2: "); scanf("%d", &num2); num1 = num1 - num2; num2 = num1 + num2; num1 = num2 - num1; printf("\nAfter swapping..."); printf("\nnum1 = %d", num1); printf("\nnum2 = %d", num2); return 0; }

Join Our Channel

Join our telegram channel to get an instant update on depreciation and new features on HTML, CSS, JavaScript, jQuery, Node.js, PHP and Python.

This channel is primarily useful for Full Stack Web Developer.

Share this Page

Meet the Author