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Simond Gear

Simond Gear

04-May-2016

Inheritance: 


Inheritance is the ability to define a new class or object that inherits the behavior and its functionality of an existing class. The new class or object is called a child or subclass or derived class while the original class is called parent or base class. 


In other words when a class acquire the property of another class is known as inheritance.We can say that, inheritance is the second pillar of OOPs because with the help of single class we can’t make our project.  Through inheritance we can achieve code reusability and encapsulation.

 For example, I have created a Shape class as a Parent class

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace OopsConcepts
{
    classShape
    {
        protectedint width;
        protectedint height;     
        publicvoid setWidth(int w)
        {
            width = w;
        }
        publicvoid setHeight(int h)
        {
            height = h;
        }    
    }
}

 


Here I havecreating an another class Rectangle that inherit to Shape class

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks; 
namespace OopsConcepts
{
    classRectangle:Shape
    {
        publicint getArea()
        {
            return(width * height);
        }
        publicint getPerimeter()
        {
            return2*(width + height);
        }      
    }
}
 


And create another entry point class (RectangleTest) and which we are creating


object of the Rectangle class for calling the method of their respective class.


using System;                                                                                   
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace OoopsConcepts
{
    classRectangleTest
    {
        staticvoid Main(string[] args)
        {
            // Inhertance Test           
            Rectangle rectange = newRectangle();           rectangle.setWidth(10);
            rectangle.setHeight(5);
            Console.WriteLine("Total area : {0}", rectangle.getArea());
            Console.WriteLine("Perimeter : {0}", rectangle.getPerimeter());
            Console.ReadLine();
}
}
}

 

Output:

Total area: 50

Perimeter:  30

 

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