Compilare: user.c: In function ‘main’: user.c:74:9: warning: passing argument 4 of ‘qsort’ from incompatible pointer type [enabled by default] qsort ( mgutui[i] , N, sizeof(int), compare); ^ In file included from user.c:2:0: /usr/include/stdlib.h:756:13: note: expected ‘__compar_fn_t’ but argument is of type ‘int (*)(const int *, const int *)’ extern void qsort (void *__base, size_t __nmemb, size_t __size, ^ user.c:49:57: warning: unused variable ‘j’ [-Wunused-variable] int N,H,U,i,**mgutui,gutui_culese=0,linii,coloana=0,j; ^