using System;

​

class Test {

    static int Age = 24;

    int InstanceAge = 0;

​

    public static void PrintAge() {

        Console.WriteLine(Age);

        Console.WriteLine(InstanceAge);     // ERROR, CANNOT ACCESS INSTANCE FIELD.

    }

​

    public void PrintAgeInstance() {

        Console.WriteLine(Age);

        Console.WriteLine(InstanceAge);     // WORKING FINE

    }

}

​

public class Program {

    public static void Main() {

        Test t = new Test();

        Test.PrintAge();

        t.PrintAgeInstance();

    }

}