Interface with real time Example

Interface means a class that has no implementation of its method, but with just declaration. Other hand, abstract class is a class that can have implementation of some method along with some method with just declaration, no implementation.

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace ConsoleApplication1

{

//interface no implementation only declaration

internal interface interfaceName

{

int GetSalary();

}

public class Fresher : interfaceName

{

public int GetSalary()

{

return 10000;

}

}

public class ExpSalary : interfaceName

{

public int GetSalary()

{

return 20000;

}

}

internal class Program

{

public static void Main(string[] args)

{

Fresher fresher = new Fresher();

int fresherSal = fresher.GetSalary();

Console.WriteLine(fresherSal.ToString());

ExpSalary exp = new ExpSalary();

int expSal = exp.GetSalary();

Console.WriteLine(expSal.ToString());

Console.ReadLine();

}

}

}