func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, l, r, shag = 0;     cin >> n;     l = 1;     r = n;     while (l <= r) {       if (shag % 2 == 0)         cout << l++ <<    ;       else         cout << r-- <<    ;       shag++;     }     return 0;   }   