Eroare de compilare: user.cpp:4:12: warning: character constant too long for its type [enabled by default] ifstream i('adunare.in'); ^ user.cpp:5:12: warning: character constant too long for its type [enabled by default] ofstream o('adunare.out'); ^ user.cpp:4:11: error: variable ‘std::ifstream i’ has initializer but incomplete type ifstream i('adunare.in'); ^ user.cpp:5:11: error: variable ‘std::ofstream o’ has initializer but incomplete type ofstream o('adunare.out'); ^