Eroare de compilare: user.c: In function ‘main’: user.c:67:6: error: ‘fin’ undeclared (first use in this function) fin>>N; ^ user.c:67:6: note: each undeclared identifier is reported only once for each function it appears in user.c:65:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(FIN, "r", stdin); ^ user.c:66:13: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen(FOUT, "w", stdout); ^