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Start your free trialDanny Yang
663 Pointsreceiving 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 Parker
231,210 PointsThere's also a short training video for making snapshots.
Danny Yang
663 PointsThanks folks. Here is my workspace snapshot: https://w.trhou.se/pn71sawjii
In the console, I attempted to run these commands: mcs Program.cs && mono Program.exe
1 Answer
Steven Parker
231,210 PointsThat'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 minutes;
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);
Kevin Gates
15,053 PointsKevin Gates
15,053 PointsPlease take a snapshot of your workspace and share it here. Here's how to do that: https://teamtreehouse.com/community/workspace-snapshots