Eroare de compilare: user.cpp:5:17: error: stdio: No such file or directory user.cpp: In function ‘int main()’: user.cpp:12: error: ‘stdin’ was not declared in this scope user.cpp:12: error: ‘freopen’ was not declared in this scope user.cpp:13: error: ‘stdout’ was not declared in this scope user.cpp:16: error: ‘scanf’ was not declared in this scope user.cpp:26: error: ‘printf’ was not declared in this scope user.cpp:30: error: ‘printf’ was not declared in this scope