Eudyptula task 6

Jules Irenge jbi.octave at
Wed Feb 24 09:27:42 EST 2021

Hi guys
I am currently stuck at task 6 haha
because of error checking on return for simple_write_buffer
I have researched on it but I just can't get appropriate documentation on
error code return of the wrapper especially when the return is negative,
I will appreciate if someone points me to some interesting ressource on the

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