Eroare de compilare: user.cpp: In function 'int main()': user.cpp:6: error: 'ifstream' was not declared in this scope user.cpp:6: error: expected `;' before 'in' user.cpp:7: error: 'ofstream' was not declared in this scope user.cpp:7: error: expected `;' before 'out' user.cpp:10: error: 'in' was not declared in this scope user.cpp:13: error: name lookup of 'i' changed for new ISO 'for' scoping user.cpp:11: error: using obsolete binding at 'i' user.cpp:18: error: 'out' was not declared in this scope user.cpp:21: error: 'out' was not declared in this scope