C# Structs

In C#, classes and structs are blueprints that are used to create instance of a class. Structs are used for lightweight objects such as Color, Rectangle, Point etc.

Unlike class, structs in C# are value type than reference type. It is useful if you have data that is not intended to be modified after creation of struct.

C# Struct Example

Let's see a simple example of struct Rectangle which has two data members width and height.

  1. using System;  
  2. public struct Rectangle  
  3. {  
  4.     public int width, height;  
  5.   
  6.  }  
  7. public class TestStructs  
  8. {  
  9.     public static void Main()  
  10.     {  
  11.         Rectangle r = new Rectangle();  
  12.         r.width = 4;  
  13.         r.height = 5;  
  14.         Console.WriteLine("Area of Rectangle is: " + (r.width * r.height));  
  15.     }  
  16. }  

Note: Struct doesn't support inheritance. But it can implement interfaces.


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