public class Hello{

    public static void Main(){

        // Here your code !

        Aaa aaa = new Aaa();

        Bbb bbb = new Bbb();

        aaa.i = 1;

        bbb.Ccc();

    }

}

​

​

public class Aaa{

    public int i;

}

​

​

public class Bbb{

    public void Ccc(){

        System.Console.WriteLine(aaa.i);//どうすればオブジェクトaaaにアクセスできるのでしょうか？

    }

}