Eroare de compilare: user.cpp:1:21: error: iostream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:20: error: ‘stdin’ was not declared in this scope user.cpp:20: error: ‘freopen’ was not declared in this scope user.cpp:21: error: ‘stdout’ was not declared in this scope user.cpp:22: error: ‘cin’ was not declared in this scope user.cpp:54: error: ‘cout’ was not declared in this scope