Crow Name wtf

Hello, I am working on the first problem of the crow quest and i keep getting different names then the program says i should even though i followed all the specifications in the assignment. Does anyone know how to fix that? Like each time i submit the code, it gets stoped at different points, sometimes 1 sometimes 8. here is the response the checking code gives me:

Check failed. I called make_a_name(3):
And got onc. But I expected to get: pez

You think that's it?

&

each time the number in make_a_name() is different. sometimes its 1, sometimes 8