Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:11:5: error: reference to ‘cin’ is ambiguous cin >> n; ^~~ user.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("bigfour.in"); ^~~ In file included from user.cpp:1:0: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:15:9: error: reference to ‘cin’ is ambiguous cin >> d; ^~~ user.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("bigfour.in"); ^~~ In file included from user.cpp:1:0: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:16:9: error: reference to ‘cin’ is ambiguous cin >> x[0] >> x[1] >> x[2] >> x[3]; ^~~ user.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("bigfour.in"); ^~~ In file included from user.cpp:1:0: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ user.cpp:34:25: error: reference to ‘cout’ is ambiguous cout<<"DA \n"; ^~~~ user.cpp:6:10: note: candidates are: std::ofstream cout ofstream cout("bigfour.out"); ^~~~ In file included from user.cpp:1:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ user.cpp:46:25: error: reference to ‘cout’ is ambiguous cout << "DA\n"; ^~~~ user.cpp:6:10: note: candidates are: std::ofstream cout ofstream cout("bigfour.out"); ^~~~ In file included from user.cpp:1:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output