why does my float variable statement keeps on givi

Question

For some reason I keep getting an error saying 'Cannot implicitly convert type double to float' All over my code. I bolded and left a comment exactly where in my code I'm getting the errors. I cant seem to figure out what the problem is. I switched the data types all to 'double' instead of 'float' and the program ran smoothly with no errors. Can some one please tell me what I am doing wrong or what is missing from the code? (Edit: Bold does not seem to work on my code on this site).

Answer 1

The problem is that when you perform your multiplication (or other arithmetic operation) you are working with a literal such as 0.15. This value by default will be treated as a double by the compiler and so when multiplied against a float it results in the larger double result. To get around this you need to mark the literals as .15f so that they are treated as float literals.

Answer 2

In addition to Phil's suggestion you should use float.TryParse instead of float.Parse otherwise you might get FormatException if user enters invlaid text

float value;
if (float.TryParse(text, out value))
{
 // Parse success..
}
else
{
 // Parse failed...
}