C# Swap | C# Program To Swap Two Numbers - c# - c# tutorial - c# net



How to write Swap Program in C# ?

  • When the values of two variables are exchanged at runtime it is called swapping of the two values.
  • learn c# tutorials - swap numbers in csharp - c# programs

    Swap numbers in csharp

  • We can swap two numbers without using third variable.
  • There are two common ways to swap two numbers without using third variable:
    1. By + and -
    2. By * and /
 swap number program c-sharp

Program 1: Using ∗ and /

  • Let's see a simple C# example to swap two numbers without using third variable.
using System;  
  public class SwapExample  
   {  
    public static void Main(string[] args)  
      {  
       int a=5, b=10;            
       Console.WriteLine("Before swap a= "+a+" b= "+b);    
       a=a*b; //a=50 (5*10)      
       b=a/b; //b=5 (50/10)      
       a=a/b; //a=10 (50/5)    
       Console.Write("After swap a= "+a+" b= "+b);       
     }  
  }

C# examples - Output :

Before swap a= 5 b= 10     
After swap a= 10 b= 5

Program 2: Using + and -

  • Let's see another example to swap two numbers using + and -.
using System;  
  public class SwapExample  
   {  
     public static void Main(string[] args)  
      {  
       int  a=5, b=10;            
       Console.WriteLine("Before swap a= "+a+" b= "+b);    
       a=a+b; //a=15 (5+10)      
       b=a-b; //b=5 (15-10)      
       a=a-b; //a=10 (15-5)   
       Console.Write("After swap a= "+a+" b= "+b);       
      }  
  }

C# examples - Output :

Before swap a= 5 b= 10     
After swap a= 10 b= 5

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