View Compilation Error

0_0_33465533_1292.cpp: In function 'int main()':
0_0_33465533_1292.cpp:26:2: error: 'ios' has not been declared
  ios::sync_with_stdio(false); 
  ^
0_0_33465533_1292.cpp:27:2: error: 'cin' was not declared in this scope
  cin.tie(0);
  ^
0_0_33465533_1292.cpp:28:2: error: 'cout' was not declared in this scope
  cout.tie(0); 
  ^