How to access to a function whose access modifier is protected and exists in a class that inherits f-CodePudding

    public class a {

    protected virtual int mult(int x)

    {

    return x*x ;

    }

    }

    public class b : a

    {

    protected override int mult(int x) { return x*x*x ; }

    }

    internal class Program { static void Main(string[] args) {

    b jack = new b();

    int v = jack.mult(5);    // error

    // so how can i access to mult() in main class without change access modifier to public ??????

    } }

How to access to a function whose access modifier is protected and exists in a class that inherits from another class in c#?

CodePudding user response：

Note that the mult function is declared as protected in both class a and class b, which means that it can only be accessed by code within the class or its derived classes. Since b is a derived class of a, the mult function is accessible to code within b.

If you want to access the mult function from a class other than b or a subclass of b, you will need to change the access modifier to the public or provide a public method in b or a subclass of b that calls the mult function.

In this case you are doing all this in the Main method which is in other class than a or b.