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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I had the same problem (С code). Most likely the problem is garbage in array output. I solved it output[0] = '\0';
Why? The return function exits the function immediately.
What does it mean dst++=...?
There is more simple algoritm
It is the bad practice writes all code inline
No
Why do you need 31?