演示抽象类继承的 C# 程序

抽象是隐藏内部细节并仅显示功能的过程。 abstract 关键字用在类或方法之前，以将类或方法声明为抽象。继承是一种面向对象的编程方法，允许一个类继承另一个类的特性（字段和方法）。在 C# 中，我们还可以使用 :运算符继承抽象类。

abstract class Abstract_class
{
    // Method declaration for abstract class
    public abstract void abstract_method();
}
class class_name  : Abstract_class
{
    // Method definition for abstract method
}

方法：

Create an abstract class and declare a method inside it using abstract keyword.
Create a parent class by overriding the method of an abstract class.
Create first child class that inherits the parent class and define a method inside it.
Create an object that is “Geeks1 obj = new Geeks1()” for the first child class in the main method.
Call all the methods that are declared using obj object.

编程需要懂一点英语

例子：

C#

// C# program to inherit abstract class.
using System;
  
// Abstract class
abstract class Abstract_class
{
      
    // Method Declaration for abstract class
    public abstract void abstract_method();
}
  
// Parent class
class Geeks : Abstract_class
{
      
    // Method definition for abstract method
    public override void abstract_method()
    {
        Console.WriteLine("Abstract method is called");
    }
}
  
// First child class extends parent
class Geeks1 : Geeks
{
      
    // Method definition
    public void method1()
    {
        Console.WriteLine("method-1 is called");
    }
}
  
class GFG{
  
// Driver code
public static void Main(String[] args)
{
      
    // Create an object
    Geeks1 obj = new Geeks1();
      
    // Call the methods
    obj.abstract_method();
    obj.method1();
}
}

输出：

Abstract method is called
method-1 is called