Compilare: user.c: In function 'citeste': user.c:9: warning: implicit declaration of function 'isdigit' user.c:11: warning: comparison between pointer and integer user.c:20: warning: comparison between pointer and integer user.c:29: warning: comparison between pointer and integer user.c: In function 'main': user.c:44: warning: 'maxe' may be used uninitialized in this function user.c:44: warning: 'maxs' may be used uninitialized in this function