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print hex in n-bit format

printf("Hex = %#x\n", 28); will print out 0x1c

What if I want to print 0x001c for 16-bits?, or even 0x0000001c with

can i adjust the format in my case?

please advice. thanks!!

Sep 29 '06 #1
2 14148
John wrote:
printf("Hex = %#x\n", 28); will print out 0x1c

What if I want to print 0x001c for 16-bits?, or even 0x0000001c with

can i adjust the format in my case?
#include <stdio.h>
#include <limits.h>
int main (void)
printf("Hex = %0#6x\n", 28);
#define NIBBLE_FMT(e) (sizeof (e) * CHAR_BIT + 3)/4+2, (e)
printf("Hex = %0#*x\n", NIBBLE_FMT(28)) ;
return 0;

E-Mail: Mine is an /at/ gmx /dot/ de address.
Sep 29 '06 #2

John wrote:
printf("Hex = %#x\n", 28); will print out 0x1c

What if I want to print 0x001c for 16-bits?, or even 0x0000001c with

can i adjust the format in my case?

please advice. thanks!!
use a "field width" to specify the length. A leading 0 before the width
will insert 0's instead of spaces, so

printf("%#06x", 28)

prints 0x001c, whereas


can be used for 32 bits.


Sep 29 '06 #3

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