Eroare de compilare: user.c: In function ‘main’: user.c:12: warning: passing argument 2 of ‘freopen’ from incompatible pointer type /usr/include/stdio.h:255: note: expected ‘const char * __restrict__’ but argument is of type ‘struct _IO_FILE *’ user.c:12: error: too few arguments to function ‘freopen’ user.c:13: warning: passing argument 2 of ‘freopen’ from incompatible pointer type /usr/include/stdio.h:255: note: expected ‘const char * __restrict__’ but argument is of type ‘struct _IO_FILE *’ user.c:13: error: too few arguments to function ‘freopen’ user.c:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result