Eroare de compilare: main.cpp: In function 'void back(int)': main.cpp:9:6: error: reference to 'cout' is ambiguous cout<<a[i]<<' '; ^~~~ main.cpp:4:10: note: candidates are: std::ofstream cout ofstream cout("permutari.out"); ^~~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ main.cpp:10:2: error: reference to 'cout' is ambiguous cout<<endl; ^~~~ main.cpp:4:10: note: candidates are: std::ofstream cout ofstream cout("permutari.out"); ^~~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ main.cpp: In function 'int main()': main.cpp:22:2: error: reference to 'cin' is ambiguous cin>>n; ^~~ main.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("permutari.in"); ^~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:75:0, from main.cpp:1: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~