C# Program to Swap Two Numbers1 min read

In this tutorial, we will write a program to swap two numbers in C#. We will use a temporary variable to swap the numbers along with a user-defined function.

Question:
Write a C# program to Swap two Numbers using third variable.

Explanation:
The user input values are passed as an argument in SwapValue function where they are swapped using a third variable temp and the swapped output is displayed as shown in the program below.

C# Program to Swap two Numbers using the Third variable

Source Code:

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using System;
 
public class Swap
{
  public static void SwapValue(int a, int b)
  {
    Console.WriteLine("Entered Numbers are: A=" + a.ToString() + " B=" + b.ToString());
 
   //temporary variable
    var temp = a;
    a = b;
    b = temp;
 
    //Display
    Console.WriteLine("The Swapped Numbers are: A=" + a.ToString() + " B=" + b.ToString());
 
  }
 
  public static void Main(string[] arg)
  {
    Console.WriteLine("Enter the two numbers that you want to swap: ");
    var input = "";
 
    input = Console.ReadLine();
    var x = int.Parse(input);
 
    input = Console.ReadLine();
    var y = int.Parse(input);
 
    SwapValue(x, y);
 
  }
}

Output:

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