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  • Category: .NET

    Abstarct function and abstract class

    Abstract Methods--> A method without Method Body is known as abstract method. it contains only declaration of the method. If we want to define a abstract method we need to use abstract modifier on that method.

    Abstract Function--> A function which contains only Declaration/signature and doesn't contain Implementation/Body/Definition is known as Abstract function. To make any function as abstract use abstract keyword. An abstract function should be terminated. overridding of an abstract function is compulsory.

    Abstract Class--> A class which contains one or more abstract function is known as an abstract class.To make any Class as abstract use abstract keyword. It's Compulsory to create/ derive a new class from an abstract class in order to provide functionality to its abstract functions.
    An abstract class can contain Non-abstarct functions. An abstract class can contain all member of a class. By default abstract class functions are not treated as public and abstract.

    Program for abstract class---------------

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    namespace Abstract
    abstract class Employee
    protected int EmpId, EAge;
    protected string EName, EAddress;
    public abstract void GetEmpData();
    public virtual void DisplayEmpData()
    Console.Write("Enter Employee Details");
    this.EmpId = Convert.ToInt32(Console.ReadLine());
    this.EName = Console.ReadLine();
    this.EAddress = Console.ReadLine();
    this.EAge = Convert.ToInt32(Console.ReadLine());
    public virtual void DispalyEmpData()
    Console.WriteLine("Employee Id is :-" + this.EmpId);
    Console.WriteLine("Employee Name is :-" + this.EName);
    Console.WriteLine("Employee Address is :-" + this.EAddress);
    Console.WriteLine("Employee Age is :-" + this.EAge);
    class Manager : Employee
    double Bonus, CA;
    public override void GetEmpData()
    Console.Write("Enter Managers Details :-");
    EmpId = Convert.ToInt32(Console.ReadLine());
    EName = Console.ReadLine();
    Bonus = Convert.ToDouble(Console.ReadLine());
    CA = Convert.ToDouble(Console.ReadLine());
    public override void DispalyEmpData()
    Console.WriteLine("Manager Id is" + EmpId);
    Console.WriteLine("Manager Name is" + EName);
    Console.WriteLine("Manager Bonus is" + Bonus);
    Console.WriteLine("Manager CA is" + CA);
    class Abstract
    static void Main(string[] args)
    Manager Obj1 = new Manager();

    output for this program is----

    Enter manager Detail is-- 10
    Manager Id is:- 10
    Manager Name is:- ravi
    Manager Bonus is:- 15000
    Manager CA is:- 25000
  • #765718

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  • #765727
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