Question

How to use interface in C#

Answer 1

using System;

interface INFC {
    void Show();
}

class Test : INFC {
    public void Show() {
        Console.WriteLine("Show()");
    }
}

class Program
{
    static void Main()
    {
        INFC iface = new Test(); 
        
        iface.Show(); 
    }
}



/*
run:

Show()

*/

 

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