Compilare: user.cpp: In function ‘void show_sm(int)’: user.cpp:47:18: warning: zero-length gnu_printf format string [-Wformat-zero-length] printf(""); ^ user.cpp: In function ‘int main()’: user.cpp:56:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("7segmente.in", "r", stdin); ^ user.cpp:57:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("7segmente.out", "w", stdout); ^