Number of Segments in a String LeetCode solution in C++

1
class Solution {
2
 public:
3
  int countSegments(string s) {
4
    if (s == "") return 0;
5
    int res = 0, flag = 0;
6
    for (int i = 0; i < size(s); i++) {
7
      if (s[i] != ' ') {
8
        i++;
9
        while (i < size(s) and s[i] != ' ') {
10
          i++;
11
        }
12
        res++;
13
      }
14
    }
15
    return res;
16
  }
17
};