View Compilation Error

0_0_38265397_3985.cpp: In function 'int main()':
0_0_38265397_3985.cpp:15:6: error: 'i' was not declared in this scope
   if(i < 66)cout<<a<<endl;
      ^
0_0_38265397_3985.cpp:15:19: error: 'a' was not declared in this scope
   if(i < 66)cout<<a<<endl;
                   ^