How to declare double as a variable with Console.Readline()

Question

Hello. My question is how to declare a variable in double format.I am trying System.Convert.ToDouble but i have error "Input string was not in a correct format"... My Code: double a = System.Convert.ToDouble(Console.ReadLine());

Answer 1

Mine appears to work fine.
https://code.sololearn.com/cv7VbRRFRCE1/?ref=app

Answer 2

Matthew
Having read your previous reply, probably your computer system was setup with a locale which uses comma ',' instead of a dot '.' for decimal separator. If this was the case, then follow the settings and use comma as decimal separator for giving input.

Answer 3

If you want to add a bit of fault tolerance to the code, you can use `TryParse` instead. You get to check whether the given input was convertible to `double` type by that.

// paste in main method
double d;
bool okay = Double.TryParse(Console.ReadLine(), out d);
if(okay) // conversion success!
{
Console.WriteLine("The double value is {0}", d);
}
else // something's not right
{
Console.WriteLine("Your input is not okay.");
}

Answer 4

What was your input string?

Answer 5

"3.12" for example

Answer 6

I use Visual studio and if i put 3.12 its error but if i use comma 3,12 its ok... It is fine or what?