View Compilation Error

0_0_30277261_26519.cpp: In function 'int main()':
0_0_30277261_26519.cpp:29:6: error: 'a' was not declared in this scope
   if(a[i]+f[i])printf("%.3lf\n",1.0*a[i]/(a[i]+f[i]));
      ^
0_0_30277261_26519.cpp:29:11: error: 'f' was not declared in this scope
   if(a[i]+f[i])printf("%.3lf\n",1.0*a[i]/(a[i]+f[i]));
           ^
0_0_30277261_26519.cpp: At global scope:
0_0_30277261_26519.cpp:34:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_30277261_26519.cpp:35:1: error: expected declaration before '}' token
 }
 ^