the check50 2016 command in case of initials and mario are showing invalid ID error. but check50 2015 command checks it right and its all green except one. Also my hello and caesar as shown by check50 are correct but still in my cs50gradebook they are marked zero! PS: i have resubmitted it.

1 Answer 1


What is the check50 2016 command? Even in 2016 I only see psets that have check50 that has 2015 as the year:

check50 2015.fall.pset1.mario mario.c

I think invalid ID means that the check50 line typed does not exist.

And in regards to the 0 grade on hello and caesar. How long has it been since you submitted? Can I see the check50 output?

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