8bitworkshop/presets/atari8-800xl/skeleton.cc65

#include <conio.h>
#include <atari.h>

void main() {
  // clear the screen
  clrscr();
  // position the cursor, output text
  gotoxy(0,1);
  // print some text
  cputs("Hello Atari 8-bit World!\r\n");
  // cartridge ROMs do not exit, so loop forever
  while (1) {
  }
}