func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t, i;     cin >> t;     for (i = 0; i < t; i++) {       string s;       cin >> s;       int j = 0, k, l = s.length(), sum = 0;       while (j < l) {         if (s[j] ==  1 ) {           k = j;           j++;           while (s[j] ==  0 ) j++;           if (j - k > 1 && s[j] ==  1 ) sum = sum + j - k - 1;         } else           j++;       }       cout << sum << endl;     }     return 0;   }   