Update number-of-digit-one.cpp

Author: kamyu104

C++/number-of-digit-one.cpp

@@ -5,6 +5,7 @@ class Solution {
 public:
     int countDigitOne(int n) {
         static const int DIGIT = 1;
+
         int is_zero = (DIGIT == 0) ? 1 : 0;
         int result = is_zero;
         for (int64_t base = 1; n >= base; base *= 10) {