func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     string s[n + 1];     if (n % 2 == 0)       cout << n * n / 2 << endl;     else       cout << ((n * n) + 1) / 2 << endl;     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= n; j++) {         if (i % 2 != 0 && j % 2 != 0)           cout <<  C ;         else if (i % 2 != 0 && j % 2 == 0)           cout <<  . ;         else if (i % 2 == 0 && j % 2 != 0)           cout <<  . ;         else           cout <<  C ;       }       cout << endl;     }     return 0;   }   