Compilare: user.c: In function 'main': user.c:10: warning: format '%d' expects type 'int *', but argument 2 has type 'char *' user.c:10: warning: format '%d' expects type 'int *', but argument 3 has type 'char *' user.c:17: warning: implicit declaration of function 'strncmp' user.c:26:2: warning: no newline at end of file /tmp/ccooMJOD.o: In function `main': user.c:(.text+0x37): warning: the `gets' function is dangerous and should not be used.