Problem in Lesson 4 of Infamouse C# Tut

elmo3zeb · 01/12/2011, 17:20

When i always Test what he says in Lesson for like this

Code:

        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            double debt = double.Parse(input);
            debt = debt * 1.5;
            Console.WriteLine(debt);
        }

Or

This

Code:

        static void Main(string[] args)
        {
            double balance = double.Parse(Console.ReadLine());
            balance = balance + (balance * 0.07);
            Console.WriteLine(balance); // first month
            balance = balance + 250.00;
            balance = balance + (balance * 0.07);
            Console.WriteLine(balance); // second month
        }

I Get Warning Message

Does this Tut like other tutorials in all sites?
Or that Tut for Coding Conquer stuff only?
If it's like the other tutorials other sites then i have one for my language

_Emme_ · 01/12/2011, 17:58

Please tell us what warning message you're getting. If your console is just closing, it's caused by you're not waiting for an user input (this is if you're running with debugging enabled (try Ctrl+F5 instead of just F5).

Korvacs · 01/12/2011, 18:19

The warning is probably about:

foo = foo + bar;

Which of course can be optimized to:

foo += bar;

And similar.

elmo3zeb · 01/12/2011, 19:07

This is the Image of testing it

Ian* · 01/12/2011, 19:29

static void Main(string[] args)
{
string input = Console.ReadLine();
double debt;
bool debtParsed = double.TryParse(input, out debt);
if (debtParsed)
{
debt = debt * 1.5;
Console.WriteLine(debt);
}
else
Console.WriteLine("Failed to parse value.");
Console.ReadKey();
}
It's because you didn't input a value, using TryParse will check to see if it can or cannot parse the value.

_Emme_ · 01/12/2011, 21:46

Just so you know, if you ever run into an error later on and want to troubleshoot it at any forum, what you need to include is the error message and the code where it occurs in, in this case your message is "Input string was not in a correct format", and the row where it is yellow.