C# program to demonstrate interface implementation with multi-level inheritance

Here, we are going to demonstrate interface implementation with multi-level inheritance in C#?
Submitted by Nidhi, on October 14, 2020

Here, we will implement the interface using multi-level inheritance. Here will implement the interface in a class and then implement the multi-level inheritance using classes.

Program:

The source code to demonstrate interface implementation with multi-level inheritance is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# program to demonstrate interface implementation 
//with multi-level inheritance

using System;

interface MyInf
{
    //Method Declaration
    void Method1();
}

class Sample1 : MyInf
{
    //Method definition
    public void Method1()
    {
        Console.WriteLine("Method1() called");
    }
}

class Sample2 : Sample1
{
    //Method definition
    public void Method2()
    {
        Console.WriteLine("Method2() called");
    }
}

class Sample3 : Sample2
{
    //Method definition
    public void Method3()
    {
        Console.WriteLine("Method3() called");
    }
}

class Program
{
    public static void Main(String[] args)
    {
        Sample3 S = new Sample3();

        S.Method1();
        S.Method2();
        S.Method3();
    }
}

Output:

Method1() called
Method2() called
Method3() called
Press any key to continue . . .

Explanation:

Here, we created an interface MyInf that contains the declaration of Method1(). Then we implemented the interface in the Sample1 class. After that, we created multi-level inheritance with the help of Sample1, Sample2, and Sample3 classes. Each class contains one method.

Now look to the Program class, It contains the Main() method, the Main() method is the entry point for the program. Here we created the object of Sample3 class and called all methods that will print the corresponding message on the console screen.






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