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Full Discussion: How to right pad with zeros using sprintf?
Top Forums Programming How to right pad with zeros using sprintf? Post 302455400 by shamrock on Tuesday 21st of September 2010 01:22:44 PM
Old 09-21-2010
Quote:
Originally Posted by emitrax
I'm not sure I understood how it works.

The first character conversion prints whatever the buffer variable contains.
The second should print "0" padded with 18 zeros right?
It would be right padded with 19 zeros.
Quote:
Originally Posted by emitrax
Wouldn't that produce an output as big as strlen(buffer) + 19?
So you need to right pad zeros all the empty slots of buffer...and did you look at all at the solution posted by jim mcnanamara. It has exactly what you want...
Code:
s = sizeof buf;
l = strlen(buf);
d = s - l;
printf("%s%0*s\n", buf, d>0 ? d : 0, d>0 ? "0" : "");

 

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LEARN ABOUT SUNOS

bioinit

bioinit(9F)						   Kernel Functions for Drivers 					       bioinit(9F)

NAME

       bioinit - initialize a buffer structure

SYNOPSIS

       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       voidbioinit(struct buf *bp);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       bp	Pointer to the buffer header structure.

DESCRIPTION

       The  bioinit()  function  initializes a buf(9S) structure. A buffer structure contains state information which has to be initialized if the
       memory for the buffer was allocated using kmem_alloc(9F). This is not necessary for a buffer allocated using getrbuf(9F) because  getrbuf()
       will call bioinit() directly.

CONTEXT

       The bioinit() function can be called from any context.

EXAMPLES

       Example 1: Using bioinit()

       struct buf *bp = kmem_alloc(biosize(), KM_SLEEP);
       bioinit(bp);
       /* use buffer */

SEE ALSO

       biofini(9F), bioreset(9F), biosize(9F), getrbuf(9F), kmem_alloc(9F), buf(9S)

       Writing Device Drivers

SunOS 5.10							    20 Nov 1996 						       bioinit(9F)
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