Compilare: user.c: In function ‘main’: user.c:103: warning: passing argument 1 of ‘fprintf’ from incompatible pointer type /usr/include/bits/stdio2.h:96: note: expected ‘struct FILE * __restrict__’ but argument is of type ‘coada’ user.c:53: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:54: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:55: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:65: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result