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

namespace Uppgift_1
{
    class Program
    {
        static void RepeatString(int num, string str)
        {
            for (int i = 0; i < num; i++)
                Console.WriteLine(str);}

            static void Main(string[] args)
        {
            {
                int num;
                int num2;
                string strone;
                string strtwo;
                string textNumber;
                string textNumber2;
                bool run = true;
                string choice;
                string sign;
                while (run)

                {
                    Console.WriteLine("1 - Kalkylator");
                    Console.WriteLine("2 - Addera två stränger");
                    Console.WriteLine("3 - räkna");
                    Console.WriteLine("4 - Multiplicera  två siffror");
                    Console.WriteLine("5 - Exit");
                    choice = Console.ReadLine();

                    if (choice == "1")
                    {
                        Console.Write("Enter a number: ");
                        textNumber = Console.ReadLine();
                        Console.Write("Enter a second number: ");
                        textNumber2 = Console.ReadLine();
                        Console.Write("Enter a sign: ");
                        sign = Console.ReadLine();

                        Int32.TryParse(textNumber, out num);
                        Int32.TryParse(textNumber2, out num2);

                        if (sign == "+")
                        {
                            Console.Write(num + " + " + num2 + " = ");
                            num = num + num2;
                            Console.WriteLine(num);
                        }
                        else if (sign == "-")
                        {
                            Console.Write(num + " - " + num2 + " = ");
                            num = num - num2;
                            Console.WriteLine(num);
                        }
                        else if (sign == "*")
                        {
                            Console.Write(num + " * " + num2 + " = ");
                            num = num * num2;
                            Console.WriteLine(num);
                        }
                        else
                        {
                            if (num2 == 0)
                            {
                                Console.WriteLine("Error");
                            }
                            else
                            {
                                Console.Write(num + " / " + num2 + " = ");
                                num = num / num2;
                                Console.WriteLine(num);
                            }
                        }
                    }

                    else if (choice == "2")
                    {
                        Console.Write("Enter the first word: ");
                        strone = Console.ReadLine();
                        Console.Write("Enter the second word: ");
                        strtwo = Console.ReadLine();

                        Console.WriteLine(strone + strtwo);
                    }
                    else if (choice == "3")
                    {

                        string text;
                        Console.Write("Enter a number: ");
                        text = Console.ReadLine();
                        Int32.TryParse(text, out num);
                        Console.Write("Enter a string: ");
                        text = Console.ReadLine();
                        RepeatString(num, text);
                        Console.ReadLine();
                    }

                    else if (choice == "4")
                    {
                        Console.Write("Enter the first number: ");
                        strone = Console.ReadLine();
                        Console.Write("Enter the second number: ");
                        strtwo = Console.ReadLine();

                        Int32.TryParse(strone, out num);
                        Int32.TryParse(strtwo, out num2);
                        num *= num2;
                        Console.WriteLine("Total: " + num);
                    }
                    else if (choice == "5")
                    {
                        run = false;
                    }
                    else
                    {
                        Console.WriteLine("You are dumb");
                    }



                }

                Console.ReadLine();
            }
        }
    }
}