运行 ID: 3506

Main.cc: In function ‘int main()’:
Main.cc:4:5: error: ‘cout’ was not declared in this scope
     cout  << endl;
     ^~~~
Main.cc:4:14: error: ‘endl’ was not declared in this scope
     cout  << endl;
              ^~~~
Main.cc:4:14: note: suggested alternative: ‘enum’
     cout  << endl;
              ^~~~
              enum
Main.cc:5:5: error: ‘cin’ was not declared in this scope
     cin >> num;
     ^~~
Main.cc:5:5: note: suggested alternative: ‘main’
     cin >> num;
     ^~~
     main
Main.cc:15:20: error: expected primary-expression before ‘<’ token
             cout <<< endl;
                    ^