In this program, You will learn how to implement abstract class and method in C#. public abstract class A { public abstract void msg(); } Example: How to implement abstract…

In this program, You will learn how to implement public-private and protected in C#. public class A { private int x = 10; protected int display() { //statement } }…

In this program, You will learn how to implement the protected keyword in C#. public class A { protected int x = 10; } Example: How to implement the protected…

In this program, You will learn how to implement method overriding in C#. class A { public virtual void display() { } } class B : A { public override…

In this program, You will learn how to implement aggregation in C#. Aggregation in C# represents a HAS-A relationship. "Alternative of Inheritance." Example: How to implement aggregation in C#. using…

In this program, You will learn how to add two numbers using hierarchical inheritance in C#. public class A { //statement } public class B : A { //statement }…

In this program, You will learn how to implement hierarchical inheritance in C#. public class A { //statement } public class B : A { //statement } public class C…

In this program, You will learn how to implement multilevel inheritance in C#. public class A { //statement } public class B : A { //statement } public class C:…

In this program, You will learn how to print student details using single-level inheritance in C#. public class Student { //statement } public class College : Student { //statement }…

In this program, You will learn how to add three numbers using single-level inheritance in C#. public class A { //statement } public class B : A { //statement }…