Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp: In function ‘int mai()’: user.cpp:5: error: ‘ifstream’ is not a member of ‘std’ user.cpp:5: error: expected ‘;’ before ‘in’ user.cpp:6: error: ‘ofstream’ is not a member of ‘std’ user.cpp:6: error: expected ‘;’ before ‘out’ user.cpp:8: error: ‘in’ was not declared in this scope user.cpp:9: error: ‘out’ was not declared in this scope user.cpp:15: warning: no return statement in function returning non-void