func_code_string: #include <bits/stdc++.h>   using namespace std;   signed main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     string a, b;     cin >> a >> b;     int pa = 0;     while (pa + 1 < a.size() && a[pa + 1] < b[0]) pa++;     for (int i = 0; i <= pa; i++) cout << a[i];     cout << b[0];   }   