Compilare: user.c: In function ‘main’: user.c:13: warning: passing argument 2 of ‘fopen’ from incompatible pointer type /usr/include/stdio.h:249: note: expected ‘const char * __restrict__’ but argument is of type ‘struct _IO_FILE *’ user.c:14: warning: passing argument 2 of ‘fopen’ from incompatible pointer type /usr/include/stdio.h:249: note: expected ‘const char * __restrict__’ but argument is of type ‘struct _IO_FILE *’ user.c:16: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:18: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result