Eroare de compilare: user.cpp:7: error: variable ‘std::ifstream in’ has initializer but incomplete type user.cpp:8: error: variable ‘std::ofstream out’ has initializer but incomplete type user.cpp: In function ‘int main()’: user.cpp:12: error: ‘n’ was not declared in this scope user.cpp:12: error: ‘k’ was not declared in this scope user.cpp:12: error: ‘a’ was not declared in this scope user.cpp:12: error: ‘b’ was not declared in this scope user.cpp:21: error: ‘putere’ was not declared in this scope