View Compilation Error

0_0_31953677_30668.cpp: In function 'int main()':
0_0_31953677_30668.cpp:16:2: error: 'cin' was not declared in this scope
  cin >> limit;
  ^
0_0_31953677_30668.cpp:75:3: error: 'cout' was not declared in this scope
   cout << time*10 << endl;
   ^
0_0_31953677_30668.cpp:75:22: error: 'endl' was not declared in this scope
   cout << time*10 << endl;
                      ^