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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 think you did a bit too much but great work
RE::
please don't use type-casting in malloc or calloc , because only c++ requires to type-cast but c automatically allocates memory!
and you must initialize the allocated memory with memset, or just use calloc instead (its recommended);
it is virtually impossible to c to hold 40 digit string length and even the string , thats why!
Bad habit or/and laziness?
What was your motive for chosing a res size of 80*char?
Junior developers should know about overflow