func_code_string: #include <bits/stdc++.h>   int main() {     std::string first, last, create =  fffffffffffff ;     int let = 1;     std::cin >> first >> last;     create[0] = first[0];     int size = first.size();     for (int i = 1; i < size; i++) {       if (first[i] < last[0]) {         create[let] = first[i];         let++;       } else         break;     }     create[let] = last[0];     create = create.substr(0, let + 1);     std::cout << create;     return 0;   }   