Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:11:5: error: reference to ‘cin’ is ambiguous cin >> sx >> sy >> s >> n; ^ user.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("cal.in"); ^ In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0, from user.cpp:1: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:14:9: error: reference to ‘cin’ is ambiguous cin >> a >> b; ^ user.cpp:5:10: note: candidates are: std::ifstream cin ifstream cin("cal.in"); ^ In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0, from user.cpp:1: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:17:5: error: reference to ‘cout’ is ambiguous cout << k; ^ user.cpp:6:10: note: candidates are: std::ofstream cout ofstream cout("cal.out"); ^ In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:74:0, from user.cpp:1: /usr/include/c++/4.8/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^