Eroare de compilare: user.cpp:4:13: error: variable ‘std::ifstream cin’ has initializer but incomplete type ifstream cin("chiftea.in"); ^ user.cpp:5:14: error: variable ‘std::ofstream cout’ has initializer but incomplete type ofstream cout("chiftea.out"); ^ user.cpp: In function ‘int main()’: user.cpp:10:5: error: reference to ‘cin’ is ambiguous cin >> test; ^ user.cpp:4:10: note: candidates are: <typeprefixerror>cin ifstream cin("chiftea.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:13:9: error: reference to ‘cin’ is ambiguous cin >> k; ^ user.cpp:4:10: note: candidates are: <typeprefixerror>cin ifstream cin("chiftea.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:15:24: error: reference to ‘cout’ is ambiguous if(rad*rad==k) cout << (4*int(rad)) << '\n'; ^ user.cpp:5:10: note: candidates are: <typeprefixerror>cout ofstream cout("chiftea.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 ^ user.cpp:16:30: error: reference to ‘cout’ is ambiguous if(rad-int(rad)<0.5) cout << (4*int(rad)+2) << '\n'; ^ user.cpp:5:10: note: candidates are: <typeprefixerror>cout ofstream cout("chiftea.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 ^ user.cpp:17:31: error: reference to ‘cout’ is ambiguous if(rad-int(rad)>=0.5) cout << (4*int(rad)+4) << '\n'; ^