using System;

​

public class program

{

    static private double leg(double a, double c)

    {

        return Math.Sqrt(c * c - a * a)}

}

​

static private double hyp(double a, double b)

{

    return Sqrt(a * a + b * b);

}

​

public static void Main()

{

    string restart = "helo";

    while (restart != q)

    {

        Console.WriteLine("Type '1' to find a hypotenuse, Type '2' to find a leg");

        restart;

        string input = Console.ReadLine();

        Console.Clear;

        if (input = "1")

        {

            Console.WriteLine("Please enter 2 legs of the triangle");

            double num1 = double.Parse(Console.ReadLine());

            double num2 = double.Parse(Console.ReadLine());

            Console.WriteLine("The hypotenuse of is " + hyp());

        }

        else if (input == "2")

        {

            oops:

                Console.WriteLine("Please enter the leg of the triangle");

            double num1 = Console.ReadLine();

            Console.WriteLine("Please enter the hypotenuse of the triangle");

            double num2 = double.Parse(Console.ReadLine());

            if (num1 > num2)

                ;

            {

                Console.WriteLine("Leg cannot be bigger than the hypotenuse");

                goto oops;

            }

​

            Console.WriteLine("The missing leg of the is " + leg(num1, num2));

        }

        else

        {

            Console.WriteLine("Please type '1' or '2'");

            goto restart;

        }

​

        Console.WriteLine(" ");

        Console.WriteLine("Type 'q' to quit, type anything else to restart");

        restart = Console.ReadLine();

        Console.Clear();

    }

}