Developer Interview question samples

FizzBuzz example.

A fizzbuzz is a small code sample/program that can be given to a developer to test his skills and knowledge about certain subjects

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1 {
    public class ClassA {
        public override string ToString() {
            return "Hello from class A";
        }
    }

    public class ClassB : ClassA {
        public override string ToString() {
            return "Hello from class B";
        }
    }

    public class ClassC : ClassB {
        public override string ToString() {
            return "Hello from class C";
        }
    }

    class Program {
        static void Main(string[] args) {
        
                        ClassA first = new ClassC();                        
                        ClassC second = new ClassC();            
                        ClassB third = (ClassB)second;            
                        ClassA fourth = (ClassA)third;            
                        object fifth = (object)fourth;            
                        
                        Console.WriteLine("1: " + first.ToString());           
                        Console.WriteLine("2: " + second.ToString());           
                        Console.WriteLine("3: " + third.ToString());          
                        Console.WriteLine("4: " + fourth.ToString());          
                        Console.WriteLine("5: " + fifth.ToString());            
                        Console.ReadLine();        
                }    
        

    }
}