int array[] = {...};
int bar(int);

int foo(int a, int b, int c) {
  int result;
  int e = 0, f = 0;
  for (int i = 0; i < a; ++i) {
    int d = a + c;
    if (bar(i) < 42) {
      e = b + c;
      f = c / a;
    }
    result += array[d + e + f];
  }
  // ...
}