func_code_string: #include <bits/stdc++.h>   using namespace std;   const double eps = 1e-10;   const int INF = 0x7fffffff;   const long long oo = 1e18;   const int N = 106;   const double pi = acos(-1.0);   int n, ans = 1, now;   char c;   int main() {     scanf( %d , &n);     for (int i = 1; i < n; i++) {       scanf(  %c , &c);       now = c -  0 ;       if (now)         ans++;       else         break;     }     cout << ans << endl;     return 0;   }   