func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t, n, p;     cin >> t;     while (t--) {       cin >> n;       string s;       cin >> s;       int c = 0;       for (int i = 0; i < n; i++) {         if (s[i] == s[i + 1]) c++;       }       if (c == 1)         cout << c << endl;       else if (c % 2 != 0) {         c /= 2;         ++c;         cout << c << endl;       } else {         c /= 2;         cout << c << endl;       }     }   }   