On Thu, Mar 16, 2000 at 03:04:53PM +1100, Shao Zhang wrote:
> Hi,
> If I have an unsigned long int, instead printing out its values
> in string using printf("%ld\n", my_var),
>
> I would like to print it out as a 4-byte binary data. Is there
> any easy way to do this in C.
>
> Thanks.
> Shao.
I pulled this out of a text book I have (modified from ints to longs):
#include <stdio.h>
#include <limits.h>
void
bit_print_long(long l)
{
long i;
long n = sizeof(long) * CHAR_BIT;
long mask = 1 << (n - 1);
for(i=1; i<=n; ++i) {
putchar(((l & mask) == 0) ? '0' : '1');
l <<= 1;
if (i % CHAR_BIT == 0 && i < n)
putchar(' ');
}
}
int
main(void)
{
long num = 2345687L;
printf("Number %d is ", num);
bit_print_long(num);
putchar('\n');
return 0;
}
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| Eric G. Miller egm2@jps.net |
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