View Compilation Error

0_0_38832958_25219.cpp: In function 'int main()':
0_0_38832958_25219.cpp:40:27: error: 'i' was not declared in this scope
   40 |                 int ans = i - 2;
      |                           ^
0_0_38832958_25219.cpp:42:38: error: 'enbl' was not declared in this scope
   42 |                 else cout<<f[n%ans]<<enbl;
      |                                      ^~~~