the following simple code is what I've written for cs50's pset1:

#include <stdio.h>

int main()
    printf("hello, world\n");

I got nothing for that in the gradebook. I even checked it using "check50 2015.fall.pset1.hello hello.c"

1 Answer 1


according to my experience it takes a maximum of 2 weeks to get your pset submission graded. usually it is graded much faster. If you've been waiting for more than 2 weeks though,if you continue to have problems, you can submit the problem again or you may email Robert Bowden at rob@cs.harvard.edu.

  • The thing is the "hello" task has already been graded. I've been awarded 0 for submitting the correct solution written above. Jun 5, 2016 at 20:20
  • Did you upload all files in each pset at one time? No issues were reported with check50? You can always re-upload. Just be sure that all the files are uploaded at the same time.
    – MARS
    Jun 5, 2016 at 20:35
  • Do I have to upload them all at the same time? Jun 5, 2016 at 20:42
  • Quite so! you must upload all at once
    – MARS
    Jun 5, 2016 at 21:10
  • Okay. Thanks a lot! Jun 5, 2016 at 21:21

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