Compilare: user.c: In function ‘main’: user.c:19: warning: initialization makes integer from pointer without a cast user.c:20: warning: initialization makes integer from pointer without a cast user.c:21: warning: passing argument 1 of ‘fscanf’ makes pointer from integer without a cast /usr/include/stdio.h:425: note: expected ‘struct FILE * __restrict__’ but argument is of type ‘int’ user.c:24: warning: passing argument 1 of ‘fscanf’ makes pointer from integer without a cast /usr/include/stdio.h:425: note: expected ‘struct FILE * __restrict__’ but argument is of type ‘int’ user.c:25: warning: passing argument 1 of ‘fprintf’ makes pointer from integer without a cast /usr/include/bits/stdio2.h:96: note: expected ‘struct FILE * __restrict__’ but argument is of type ‘int’ user.c:27: warning: passing argument 1 of ‘fclose’ makes pointer from integer without a cast /usr/include/stdio.h:214: note: expected ‘struct FILE *’ but argument is of type ‘int’ user.c:28: warning: passing argument 1 of ‘fclose’ makes pointer from integer without a cast /usr/include/stdio.h:214: note: expected ‘struct FILE *’ but argument is of type ‘int’ user.c:21: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:24: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:29: warning: control reaches end of non-void function