why does printf output include a trailing 'D'
I am a newbie C coder. I am wondering why the following program's printf output show a trailing 'D' after the decimal integer. Note the trailing D after the 8 in the output snippet below.
compiler: gcc version 2.95.4 20020320 [FreeBSD]
here is the output:
---- output ----
% ./count.exe
123
123
8D
^
this is the 'D' I am talking about.
---- snip ----
Code:
#include <stdio.h>
/* count characters in input; 1st version */
main()
{
long nc;
nc=0;
while (getchar() != EOF)
++nc;
printf("%ld\n", nc);
}