printing - printf does not print complete string -

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it displays "hello world". why?

#include <stdio.h>  int main(void) {     printf("..... world\rhello\n");     return 0; }

this because \r carriage return (cr). returns caret start of line. afterwards write hello there, overwriting dots.

\n (line feed, lf) on other hand used to move caret 1 line downwards, why teletypewriters had sequence cr-lf, or carriage return followed line feed position caret @ start of next line. unix did away , lf on own. cr still exists old semantics, though.


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