View Compilation Error

0_0_16585924_19434.cpp:1:1: error: 'include' does not name a type
 include <iostream>
 ^
0_0_16585924_19434.cpp: In function 'int main()':
0_0_16585924_19434.cpp:22:9: error: 'cin' was not declared in this scope
  while (cin >> n)
         ^
0_0_16585924_19434.cpp:24:3: error: 'cout' was not declared in this scope
   cout << f[n] << endl;
   ^
0_0_16585924_19434.cpp:24:19: error: 'endl' was not declared in this scope
   cout << f[n] << endl;
                   ^