Borderou de evaluare (job #504529)

Eroare de compilare: user.cpp:48:31: warning: multi-character character constant [-Wmultichar] user.cpp:5:16: error: variable 'std::ifstream cin' has initializer but incomplete type user.cpp:6:18: error: variable 'std::ofstream cout' has initializer but incomplete type user.cpp: In function 'int main()': user.cpp:12:5: error: reference to 'cin' is ambiguous user.cpp:5:13: error: candidates are: <typeprefixerror>cin /usr/include/c++/4.6/iostream:61:18: error: std::istream std::cin user.cpp:15:5: error: reference to 'cout' is ambiguous user.cpp:6:14: error: candidates are: <typeprefixerror>cout /usr/include/c++/4.6/iostream:62:18: error: std::ostream std::cout user.cpp:29:9: error: 'nr' was not declared in this scope user.cpp:31:9: error: expected ';' before 'while' user.cpp:56:1: error: expected '}' at end of input user.cpp:56:1: error: expected '}' at end of input