It's better not to edit our delete questions posted on the forums because the thread makes no sense historically. We sort of hope that a thread can be used as a reference later on.
So, to restate the questions: What's the C equivalent of cout << setw(3) << board[x][y] where board is of type int** board?
printf("%3d", board[x][y]);
Can I do void's and bool's?
We can do bool, but void means unspecified type, and we need to interprest the bit pattern if you want to display it, so no, you can't do void.