I'm trying to make a Y/N verify for a readline input, but I can't convert the input into something where I could verify what it is.

Question

1.00/5 (1 vote)

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C#

using System;

namespace AgeGuesser
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Input your age please: ");
            int input = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Is this right?(Y/N): " + input);
            var test = Console.ReadKey();
            bool yes = Convert.ToBoolean(ConsoleKey.Y);
            bool no = Convert.ToBoolean(ConsoleKey.N);
            Convert.ToBoolean(test);
            if (test = yes) //This doesn't work because it won't convert bool to consolekeyinfo
            {
                
            }
        }
    }
}

What I have tried:

I don't really remember what I've tried but all I know is that it didn't work, but I do know it was just slight variations of the problem code. Sorry.

Posted 25-Jan-20 6:46am

Tenet1001

Updated 26-Jan-20 7:51am

Wendelius

v4

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BillWoodruff · Answer 1 · 2020-01-26T07:52:00

1. why not test to see if the user inputs a number ... defensive programming ! see the use of In32.TryParse in this example.

2. why not limit the number of tries the user can have to avoid endless looping ?

using System;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int agevalue;

            int ntries = 2;
            int tries = 1;

            while (true)
            {
                Console.WriteLine($"try: #{tries} | Input your age please: ");

                var age = Console.ReadLine();

                if (Int32.TryParse(age, out agevalue))
                {
                    // add range checking here ?

                    Console.WriteLine("Is this right?(Y/N): " + agevalue);

                    if (Console.ReadKey().Key == ConsoleKey.Y) break;

                    Console.Clear();
                }

                if (++tries > ntries) break;
            }
        }
    }
}

Another useful thing to add would be checking to see if the age entered is within a certain range that makes sense in the context of your app.

Gerry Schmitz · Answer 2 · 2020-01-25T07:09:00

Solution 1

if (test = yes) \\This doesn't work because it won't convert bool to

Easy mistake; it's "==" for "comparing"; "=" only for assignment.

("!=" means "not equal to"; ">="; etc.)

Posted 25-Jan-20 7:09am

Gerry Schmitz

Updated 25-Jan-20 7:12am

v3

sOwlO · Answer 3 · 2020-01-25T08:33:00

You are making it complicated for no reason. You dont have to use bool there.

using System;

namespace AgeGuesser
{
    class Program
    {
        static void Main(string[] args)
        {
            string yes = "Y";
            Console.WriteLine("Input your age please: ");
            int input = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Is this right?(Y/N): " + input);
            string input2 = Console.ReadLine();
            if (yes == input2)
            {
                Console.WriteLine("Mgergerge");
            }
            else
            {
                Console.WriteLine("eqwrq");
            }
            Console.ReadKey();
        }
    }
}

I'm trying to make a Y/N verify for a readline input, but I can't convert the input into something where I could verify what it is.

3 solutions

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