Compilare: user.c: In function 'main': user.c:45: warning: implicit declaration of function 'strtok' user.c:45: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:47: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:49: 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:54: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:90: warning: control reaches end of non-void function