View Compilation Error

0_0_29737379_6635.cpp: In function 'int main()':
0_0_29737379_6635.cpp:13:4: error: 'f' was not declared in this scope
    f[i] = f[i-1] + f[i-2];
    ^
0_0_29737379_6635.cpp:15:11: error: 'f' was not declared in this scope
   cout << f[i] << endl;
           ^
0_0_29737379_6635.cpp:15:13: error: 'i' was not declared in this scope
   cout << f[i] << endl;
             ^