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C# C# Basics (Retired) Perfect Doubles

Posted by Mika Quentin
Mika Quentin
1,885 Points

This is not valid input

Hello,

I did everything on my Visual Studio but I still get a "this is not valid input" when I enter "20 5" minutes in the console. I replaced all the int by double but still got this error.

Screenshots : http://1drv.ms/247Rhg6 http://1drv.ms/1LrJwGs

Thank you

4 Answers

Rune Andreas Nielsen
Rune Andreas Nielsen
5,354 Points
Rune Andreas Nielsen
Rune Andreas Nielsen
5,354 Points

Hi Mika it might be because of your input of "2 05" instead of "205". If there is a space between the numbers, it won't allow you to parse it to either double or int. 

            // Works fine
            string s = "205";
            double d = double.Parse(s);

            // Throws an error
            s = "2 05";
            d = double.Parse(s);
Mika Quentin
Mika Quentin
1,885 Points
Mika Quentin
Mika Quentin
1,885 Points

Actually I wrote 20.5 like in the course. After your post I tried "," and it worked. Is it because my keyboard is a french one ? This is weird.

Thanks for your help !

Jim Gilliam
Jim Gilliam
487 Points
Jim Gilliam
Jim Gilliam
487 Points

I think it's the space. I've haven't learned yet if spaces are parsed with C#, but Rune (above) says no.

Christopher Debove
PLUS
Christopher Debove
Courses Plus Student 18,373 Points
Christopher Debove
Christopher Debove
Courses Plus Student 18,373 Points

C# write and understand decimal in the language of the OS... Your culture is surely french or another culture where the decimal character is "," and not "."