Eroare de compilare: user.cpp:2:19: warning: extra tokens at end of #include directive user.cpp:3: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp:5: error: ‘ifstream’ does not name a type user.cpp:6: error: ‘ofstream’ does not name a type user.cpp:7: error: expected constructor, destructor, or type conversion before ‘<’ token user.cpp: In function ‘int main()’: user.cpp:12: error: ‘f’ was not declared in this scope user.cpp:15: error: ‘d’ was not declared in this scope user.cpp:16: error: ‘d’ was not declared in this scope user.cpp:21: error: ‘g’ was not declared in this scope