Eroare de compilare: user.cpp:8:13: error: variable ‘std::ifstream cin’ has initializer but incomplete type ifstream cin("hallway.in"); ^ user.cpp:9:14: error: variable ‘std::ofstream cout’ has initializer but incomplete type ofstream cout("hallway.out"); ^ user.cpp: In function ‘int main()’: user.cpp:44:5: error: reference to ‘cin’ is ambiguous cin>>m>>n>>k; ^ user.cpp:8:10: note: candidates are: <typeprefixerror>cin ifstream cin("hallway.in"); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:46:9: error: reference to ‘cin’ is ambiguous cin>>v[i].x>>v[i].y; ^ user.cpp:8:10: note: candidates are: <typeprefixerror>cin ifstream cin("hallway.in"); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:69:5: error: reference to ‘cout’ is ambiguous cout<<fixed<<setprecision(8)<<(d[k + 1]/2.0)<<'\n'; ^ user.cpp:9:10: note: candidates are: <typeprefixerror>cout ofstream cout("hallway.out"); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^