Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:45: error: ‘ifstream’ was not declared in this scope user.cpp:45: error: expected ‘;’ before ‘q’ user.cpp:46: error: ‘ofstream’ was not declared in this scope user.cpp:46: error: expected ‘;’ before ‘w’ user.cpp:47: error: ‘q’ was not declared in this scope user.cpp:48: error: ‘w’ was not declared in this scope