Compilare: user.c: In function 'main': user.c:44: warning: implicit declaration of function 'strtok' user.c:44: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:46: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:48: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:52: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:53: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:89: warning: control reaches end of non-void function