Eroare de compilare: user.cpp: In function ‘void afisare(int)’: user.cpp:13:7: error: reference to ‘cout’ is ambiguous cout<<st[i]; ^ user.cpp:7:10: note: candidates are: std::ofstream cout ofstream cout("permutari.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:14:5: error: reference to ‘cout’ is ambiguous cout<<endl; ^ user.cpp:7:10: note: candidates are: std::ofstream cout ofstream cout("permutari.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: In function ‘void back(int)’: user.cpp:32:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(valid(p)) ^ user.cpp: In function ‘int main()’: user.cpp:40:5: error: reference to ‘cin’ is ambiguous cin>>n; ^ user.cpp:6:10: note: candidates are: std::ifstream cin ifstream cin("permutari.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 ^