C# Program to Swap Two Numbers


This is a C# Program to swap 2 numbers.

Problem Description

This C# Program Swaps 2 Numbers.

Problem Solution

It obtains two numbers from the user and swaps the numbers using a temporary variable.

Program/Source Code

Here is source code of the C# program that swaps two numbers. The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.

 * C# Program to Swap two Numbers
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Program
    class Program
        static void Main(string[] args)
            int num1, num2, temp;
            Console.Write("\nEnter the First Number : ");
            num1 = int.Parse(Console.ReadLine());
            Console.Write("\nEnter the Second Number : ");
            num2 = int.Parse(Console.ReadLine());
            temp = num1;
            num1 = num2;
            num2 = temp;
            Console.Write("\nAfter Swapping : ");
            Console.Write("\nFirst Number : "+num1);
            Console.Write("\nSecond Number : "+num2);
Program Explanation

In this C# program, we are reading the numbers using ‘num1’ and ‘num2’ variables respectively. Interchange the values of the ‘num1’ and ‘num2’ variables using temporary variable ‘t’. Print the swapped value of 2 numbers.

Runtime Test Cases
Enter the First Number : 23
Enter the Second Number : 25
After Swapping :
First Number : 25
Second Number : 23

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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