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View Compilation Error

0_0_39728568_11458.cpp: In function 'int main()':
0_0_39728568_11458.cpp:6:17: error: 'cin' was not declared in this scope
    6 |         while ( cin >> n && n ) {
      |                 ^~~
0_0_39728568_11458.cpp:13:17: error: 'cout' was not declared in this scope
   13 |                 cout << sum << endl;
      |                 ^~~~
0_0_39728568_11458.cpp:13:32: error: 'endl' was not declared in this scope
   13 |                 cout << sum << endl;
      |                                ^~~~


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