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

namespace program
{
    class Program
    {
        static void Main(string[] args)
        {
        start:
            Console.WriteLine("How many questions do you wanna answer");
            int a = Convert.ToInt32(Console.ReadLine());
            Console.Clear();
            int wrong = 0;
            int correct = 0;
            for (int i = 0; i < a; i++)
            {

                Random rnd = new Random();

                int sum1 = rnd.Next(1, 11);
                int sum2 = rnd.Next(1, 11);
                int answer;

                int option = rnd.Next(1, 4);
                int question = option;
                string question2 = "";
                if (question == 1)
                {
                    question2 = "+";
                }
                if (question == 2)
                {
                    question2 = "X";
                }
                if (question == 3)
                {
                    question2 = "-";
                }

                Console.WriteLine("Asnwer this question!");
                Console.WriteLine("What is:" + sum1 + " " + question2 + " " + sum2);
                answer = Convert.ToInt32(Console.ReadLine());



                if (option == 1)
                {
                    if (answer == sum1 + sum2)
                    {
                        Console.WriteLine("Well done bro!");
                        correct++;
                    }
                    else
                    {
                        Console.WriteLine("Wrong! keep practicing bro!");
                        wrong++;
                    }
                }
                else if (option == 2)
                {
                    if (answer == sum1 * sum2)
                    {
                        Console.WriteLine("Well done bro!");
                        correct++;
                    }
                    else
                    {
                        Console.WriteLine("Wrong! keep practicing bro!");
                        Console.Beep();
                        wrong++;
                    }
                }
                else if (option == 3)
                {
                    if (answer == sum1 - sum2)
                    {
                        Console.WriteLine("Well done bro!");
                        correct++;
                    }
                    else
                    {
                        Console.WriteLine("Wrong! keep practicing bro!");
                        Console.Beep();
                        wrong++;
                    }
                }
                Console.Clear();

            }
            Console.WriteLine("you got: " + correct + " correct and: " + wrong + "wrong");
            Console.WriteLine("do you want to exit? \n then type yes");

            string yes = Console.ReadLine();

            if (yes == "yes")
            {
                System.Environment.Exit(1);
            }
                else { goto start; }
            Console.ReadKey();
        }

    }
}