What is inheritance in oops? with example? why we are using inheritance and its uses?

Question

What is inheritance in oops? with example? why we are using inheritance and its uses? I need a simple answer....with real time example....

Vulpes · Answer

Inheritance is where one class (child class) inherits the members of another class (parent class). The benefit of inheritance is that the child class doesn't have to redeclare and redefine all the members which it inherits from the parent class. It is therefore a way to re-use code. Inheritance also enables you to write generic code which applies to all classes in an inheritance hierarchy. You can do this because you know that all child classes must contain the same members as the parent class. Here's a very simple example which illustrates these points. Note in particular that: 1. ParentMethod is inherited by the Child class and so doesn't have to be redeclared or redefined. 2. Although TestMethod takes a parameter of type Parent we can nevertheless pass it a Child object as well. This is because Child must contain the same members as Parent and so is implicitly convertible to it. using System; class Parent { public void ParentMethod() { Console.WriteLine(Hello from parent method); } } class Child : Parent { public void ChildMethod() { Console.WriteLine(Hello from child method); } } class Test { static void Main() { Child c = new Child(); c.ParentMethod(); c.ChildMethod(); TestMethod(c); Console.ReadKey(); } static void TestMethod(Parent p) { p.ParentMethod(); } } There's a lot more to inheritance than I can sensibly describe in this post but I have described the essence of it.

Jignesh Trivedi · Answer

hi Inheritance enables you to create new classes that reuse extend and modify the behavior that is defined in other classes. The class whose members are inherited is called the base class  and the class that inherits those members is called the derived class . A derived class can have only one direct base class. Inheritance is transitive. When you define a class to derive from another class the derived class implicitly gains all the members of the base class except for its constructors and destructors. The derived class can thereby reuse the code in the base class without having to re-implement it. In the derived class you can add more members. In this manner the derived class extends the functionality of the base class. public class A { public string Name {get;set;} } public class B : A { public strind GetName() { return Name; } } hope this will help you.