Instead of conio.h , what should i use on xcode?

here is my program.

#include <stdio.h>

#include <conio.h>

void main()

{

clrscr();

textcolor(RED);

cprintf("I will be the best programmer in the world.");

getch();

}

here it says eror on conio.h.

what i need use instead of conio.h?