Compilare: user.cpp: In constructor ‘Kosaraju::Kosaraju(int, int)’: user.cpp:118:13: warning: ‘Kosaraju::isVisited’ will be initialized after [-Wreorder] vector<int> isVisited; ^ user.cpp:117:21: warning: ‘std::vector<std::vector<int> > Kosaraju::Results’ [-Wreorder] vector<vector<int> >Results; ^ user.cpp:14:1: warning: when initialized here [-Wreorder] Kosaraju(int N, int M):nodes( N ), ^ user.cpp: In function ‘int main()’: user.cpp:130:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FIN, "r", stdin); ^ user.cpp:132:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:137:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^ user.cpp: In member function ‘void Kosaraju::writeData()’: user.cpp:96:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FOUT, "w", stdout); ^