What is the difference between \r and \n?

Question

How are \\r and \\n different? I think it has something to do with Unix vs. Windows vs. Mac, but I\'m not sure exactly how they\'re different, and

Answer 1

\r is used to point to the start of a line and can replace the text from there, e.g.

main()
{
printf("\nab");
printf("\bsi");
printf("\rha");
}

Produces this output:

hai

\n is for new line.