Compilare: user.c:34: warning: type defaults to 'int' in declaration of 'CLASS_SIZE' user.c: In function 'flashsort': user.c:53: warning: implicit declaration of function 'calloc' user.c:53: warning: incompatible implicit declaration of built-in function 'calloc' user.c:205: warning: operation on 'j' may be undefined user.c:211: warning: implicit declaration of function 'free' user.c:45: warning: unused variable 'mx' user.c: In function 'main': user.c:224: warning: passing argument 1 of 'flashsort' from incompatible pointer type