Is this code valid? Can I have a private field in a class without public getters and setters?-CodePudding

This is not my code, I'm just studying how the language works, what is permitted and what isn't, so I'm learning from different examples. Is the class B correct in this instance, written this way?

using System;

namespace Testiranje
{
    class X
    {
        int x;
        public X(int i)
        {
            x = i;
        }
    }

    class B : X
    {
        int b;
    }
}

CodePudding user response：

This code will give you an CS7036 compile error at class B : X. To get rid of this error, you need to provide a constructor which can call the base class constructor correctly with one argument, for example:

class B : X
{
    B():base(1) {}
    int b;
}

Nothing wrong with int b; though, there is no enforcement to add getter/setter.

CodePudding user response：

When you inherit a class with a constructor that has argument, you must have a constructor in derived class than call the base class constructor with it's arg. so you must write this for class B:

    public B(int a) : base(a)
    {

    }