Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:2:21: error: iostream.h: No such file or directory user.cpp: In function ‘void citire()’: user.cpp:14: error: ‘ifstream’ was not declared in this scope user.cpp:14: error: expected ‘;’ before ‘f’ user.cpp:15: error: ‘f’ was not declared in this scope user.cpp:13: warning: unused variable ‘j’ user.cpp: In function ‘int main()’: user.cpp:52: error: ‘ofstream’ was not declared in this scope user.cpp:52: error: expected ‘;’ before ‘g’ user.cpp:54: error: ‘g’ was not declared in this scope