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:8: error: ‘ifstream’ does not name a type user.cpp:9: error: ‘ofstream’ does not name a type user.cpp: In function ‘void back(int)’: user.cpp:18: error: ‘fout’ was not declared in this scope user.cpp:21: error: ‘fout’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:50: error: ‘fin’ was not declared in this scope user.cpp:64: error: ‘fout’ was not declared in this scope