Eroare de compilare: user.cpp:1:17: error: stdio: No such file or directory user.cpp: In function ‘int main()’: user.cpp:5: error: ‘stdin’ was not declared in this scope user.cpp:5: error: ‘freopen’ was not declared in this scope user.cpp:6: error: ‘stdout’ was not declared in this scope user.cpp:7: error: ‘scanf’ was not declared in this scope user.cpp:15: error: ‘printf’ was not declared in this scope