Compilare: user.cpp: In function ‘int main()’: user.cpp:71:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^ user.cpp:72:10: warning: unused variable ‘GASIT’ [-Wunused-variable] bool GASIT; ^ user.cpp: In function ‘void get_nmb(int&)’: user.cpp:40:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, dim, stdin); ^ user.cpp:51:39: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, dim, stdin); ^ user.cpp: In function ‘int main()’: user.cpp:68:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("note.in", "r", stdin); ^ user.cpp:69:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("note.out", "w", stdout); ^