Compilare: user.c:21: warning: return type of 'main' is not 'int' user.c: In function 'main': user.c:31: warning: format '%d' expects type 'int *', but argument 3 has type 'long int *' user.c:32: warning: format '%d' expects type 'int *', but argument 3 has type 'long int *' user.c:33: warning: format '%d' expects type 'int *', but argument 3 has type 'long int *' user.c:42: warning: format '%d' expects type 'int *', but argument 3 has type 'long int *' user.c:43: warning: format '%d' expects type 'int *', but argument 3 has type 'long int *' user.c:46: warning: passing argument 4 of 'qsort' from incompatible pointer type user.c:92: warning: format '%d' expects type 'int', but argument 3 has type 'long int'