Colin Alston wrote:
On 2008/08/27 05:22 PM Dave Israel wrote:
Normally, I don't participate in this sort of thing, but I'm a sucker
for a "there's more than one way to do it" challenge.
Aww come on, C gets way more "fun" than that ;)
#define _u8 unsigned char
#define _u32 unsigned long
int main(void) {
_u32 ipn = 1089055123;
_u8 ipa[3];
_u8 oct = 0;
for (oct=0; oct <4; oct++){
ipa[oct] = (char)(
(ipn & (0xFF000000 >> (8*oct))) >> (8*(3-oct))
);
}
printf("%d.%d.%d.%d\n", ipa[0], ipa[1], ipa[2], ipa[3]);
return 0;
}
Actually, who needs loops for that?
#include <stdio.h>
int main()
{
unsigned i = 1089055123;
printf("%d.%d.%d.%d\n",
(unsigned char)(((char*)&i)[3]),
(unsigned char)(((char*)&i)[2]),
(unsigned char)(((char*)&i)[1]),
(unsigned char)(((char*)&i)[0])
);
return 0;
}
Robert
