Question

Is their a way to clear the screen in c++ on a mac without using the
system(“clear”);
command? If not is their a way to replace a character?

Answer 1

If you absolutely do not care about portability, just emit the same sequence of characters that clear does.

$ clear | od -c
0000000 033   [   H 033   [   2   J
0000007
$ : "Oh, it is ESCAPE [ H ESCAPE [ 2 J on my computer"
$ cat clear_fun.cc
#include <iostream>
void clear() { std::cout << "\033[H\033[2J" << std::flush; }
$