func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string a;     int count = 0, c = 0;     cin >> a;     count = a.size();     for (int i = 0; a[i] !=   0 ; i++) {       if (a[i] >=  A  && a[i] <=  Z ) c++;     }     if ((c == count) || ((c == count - 1) && (a[0] >=  a  && a[0] <=  z ))) {       for (int i = 0; a[i] !=   0 ; i++) {         if (a[i] >=  A  && a[i] <=  Z )           a[i] = a[i] + 32;         else           a[i] = a[i] - 32;       }     }     for (int i = 0; a[i] !=   0 ; i++) {       cout << a[i];     }   }   