func_code_string: #include <bits/stdc++.h>   using namespace std;   string s;   int main() {     cin >> s;     for (int i = 1; i < s.size(); i++) {       if (s[i] == s[i - 1])         for (char j =  a ; j <=  z ; j++)           if (s[i - 1] != j && s[i + 1] != j) {             s[i] = j;             break;           }     }     cout << s << endl;   }   