Eroare de compilare: user.cpp:2:15: error: math: No such file or directory user.cpp: In function ‘int main()’: user.cpp:6: error: variable ‘std::ifstream cin’ has initializer but incomplete type user.cpp:7: error: ‘ofstram’ was not declared in this scope user.cpp:7: error: expected ‘;’ before ‘cout’ user.cpp:12: error: ‘pow’ was not declared in this scope user.cpp:18: error: ‘struct std::ostream’ has no member named ‘close’