Compilare: user.cpp: In function ‘int main()’: user.cpp:14:37: warning: '0' flag ignored with precision and ‘%i’ gnu_printf format [-Wformat=] printf("%0.2i:%0.2i\n", h, m); ^ user.cpp:14:37: warning: '0' flag ignored with precision and ‘%i’ gnu_printf format [-Wformat=] user.cpp:6:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ceas3.in", "r", stdin); ^ user.cpp:7:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ceas3.out", "w", stdout); ^