Answer 1

It is escape codes for console.
printf("\033[%dD",y);
means move cursor left specified number (y) columns.

http://man7.org/linux/man-pages/man4/console_codes.4.html

Answer 2

Maybe \033 is the ESC character, to reset the terminal, but I'm not sure.

Answer 3

selamun aleygummm ahahah

Answer 4

هلا

Answer 5

Hi