Question

How to use class with protected data members in C#

Answer 1

using System;

class A {
    protected int n = 5790;
}

class B : A
{
    static void Main()
    {
        var oa = new A();
        var ob = new B();

        // oa.n = 90; // error CS1540: Cannot access protected member `A.n' via a qualifier of type `A'. The qualifier must be of type `B' or derived from it
        
        Console.WriteLine(oa);

        ob.n = 10;
        Console.WriteLine(ob.n);
    }
}



/*
run

A
10

*/

 

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