using System;

public class Program

{

    public static void Main()

    {

        int totalQuestions = 5;

        int correctQuestions = 0;

        char choice = ' ';

        Console.WriteLine("Welcome to my multiple choice quiz");

        Console.WriteLine("Question #1 What is 2+2?");

        Console.WriteLine("A) 1\nB) 22\nC) 4\nD) 13");

        do{

            Console.WriteLine("Enter your choice: ");

            choice = Convert.ToChar(Console.ReadLine());

            if(choice=='B'|| choice=='b'){

            correctQuestions++;

            break;

        }

        if(choice=='A'||choice=='C'||choice=='D'){

            break;

        }

        }

    while(true);

        Console.WriteLine("You got a "+correctQuestions+"/"+totalQuestions+", that's a " +(100*(double)correctQuestions/totalQuestions)+"%");

    }

}