func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s, out;     cin >> s;     for (int i = 0; s[i] !=   0 ; i++) {       s[i] = tolower(s[i]);       if (s[i] ==  o  || s[i] ==  u  || s[i] ==  i  || s[i] ==  e  ||           s[i] ==  a  || s[i] ==  y )         ;       else {         out +=  . ;         out += s[i];       }     }     cout << out;     return 0;   }   