Compilare: user.c: In function 'main': user.c:51: warning: implicit declaration of function 'strtok' user.c:51: 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:55: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:61: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:62: warning: passing argument 1 of 'atoi' makes pointer from integer without a cast user.c:102: warning: control reaches end of non-void function