Convert String to int in C#

Question

I am trying to write a simple program that asks the user to enter a number and then I will use that number to decide what the cost of the ticket will be for their given age. I am having trouble when trying to convert the string to int. Otherwise the program layout is fine. Any suggestions? thanks

using System;

class ticketPrice
{    
    public static void Main(String[] args)
    {
        Console.WriteLine("Please Enter Your Age");
        int input = Console.ReadLine();
        if (input < 5)
        {
            Console.WriteLine("You are "+input+" and the admisson is FREE!");
        }
        else if (input > 4 & input < 18)
        {
            Console.WriteLine("You are "+input+" and the admission is $5");
        }
        else if (input > 17 & input < 56)
        {
            Console.WriteLine("You are "+input+" and the admission is $10");
        }
        else if (input > 55)
        {
            Console.WriteLine("You are "+input+" and the admission is $8");
        }
    }
}

Answer 1

Try the int.TryParse(...) method. It doesn't throw an exception.

http://msdn.microsoft.com/en-us/library/f02979c7.aspx

Also, you should use && not & in your conditions. && is logical AND and & is bitwise AND.

Answer 2

• For easy parsing of strings to integers (and other number types), use that number type's .TryParse(inputstring, yourintegervariable) method. This method will output a Boolean (True/False), letting you know whether the operation passed or failed. If the result is false, you can give an error message before going any further (don't have to worry about crashing your program).

• Previous text concerning switch statements has been removed

• In C#, you need to use the && operator for logical AND. & is not the same and may not work the way you believe it will.