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receiving error CS1644
I am receiving the following error when trying to compile the code:
error CS1644: Feature `declaration expression' cannot be used because it is not part of the C# 6.0 language specification
Steven Parker228,991 Points
That's an interesting error message. It indicates that the compiler correctly identified what you were trying to do (a declaration expression), but didn't perform it because it is a version 6 compiler. I believe that feature was originally planned for version 6 but wasn't introduced into the language until version 7.3.
So for now, keep this C#6.0 compiler happy by declaring your variable before the expression it is used in:
int.TryParse(entry, out minutes);
You could also change "TryParse" into a plain "Parse" since you are not using the return value:
int minutes = int.Parse(entry);