Diff- \r and \n

What is the difference between carriage return and newline?

\n is in fact the combination of carriage return and line feed; so that you go to the beginning og the next line

Thanks but then what is the function of \r - carriage return?

Printf ( " sss \r ddd");

This line prints just ddd. why?

The carriage return will return the cursor to the leftmost position without going to the next line. Obviously your sss is overwritten by ddd