Compilare: user.c: In function 'main': user.c:13: warning: format '%d' expects type 'int *', but argument 2 has type 'char *' user.c:13: warning: format '%d' expects type 'int *', but argument 3 has type 'char *' user.c:24: warning: implicit declaration of function 'strncmp' user.c:9: warning: unused variable 'j' user.c:34:2: warning: no newline at end of file /tmp/ccYBgG7g.o: In function `main': user.c:(.text+0x4b): warning: the `gets' function is dangerous and should not be used.