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From: raj@ursa.UUCP
Newsgroups: comp.unix.wizards
Subject: PRINTF CONSTRUCT
Message-ID: <272@future.ursa.UUCP>
Date: Sat, 13-Jun-87 13:07:43 EDT
Article-I.D.: future.272
Posted: Sat Jun 13 13:07:43 1987
Date-Received: Tue, 16-Jun-87 00:59:40 EDT
Distribution: na
Organization: Bear Stearns, New York, NY
Lines: 22
Keywords: standard C

I have often used the construct

        printf("%*s\n",i,"#");

to get '#' printed after i blank spaces.  For example, the following 
program could be used to get a plot of the sin function:


#include <math.h>
#include <stdio.h>
main()
{
int i,j=0;
while(1==1){
i = 40+38*sin((double) j++/10.0);
printf("%*s\n",i,"#");
}}


My question is:  Is this allowed in standard C, or am I dealing with
some non standard extensions?  I could not find this in Kernighan and
Ritchie.  But then it doesnt talk of enumerated types either.