Eroare de compilare: user.cpp:2: error: expected constructor, destructor, or type conversion before ‘namespace’ user.cpp:3: error: ‘ifstream’ does not name a type user.cpp:4: error: ‘ofstream’ does not name a type user.cpp: In function ‘int main()’: user.cpp:7: error: ‘fin’ was not declared in this scope user.cpp:34: error: ‘fout’ was not declared in this scope