sprintf()

[ET T. <et...@mi...>]

Disregard my last message. Can anyone tell me what is wrong with the
following:-

----
unsigned long ix = 2220000; // a 32-bit variable
char hexStr[100];

MemSet(hexStr, 100, 0);

memset(hexStr, 0, 50);
StrIToH(hexStr+StrLen(hexStr), (ix >> 24) & 0xff);
hexStr[StrLen(hexStr)] = ':';
StrIToH(hexStr+StrLen(hexStr), (ix >> 16) & 0xff);
hexStr[StrLen(hexStr)] = ':';
StrIToH(hexStr+StrLen(hexStr), (ix >> 8)  & 0xff);
hexStr[StrLen(hexStr)] = ':';
StrIToH(hexStr+StrLen(hexStr), (ix)       & 0xff);
hexStr[StrLen(hexStr)] = ':';

WinDrawChars(hexStr, StrLen(hexStr), 5, 20);
----

The output was 00000000:00000021:000000DF:000000E0. The prefixed zeros are
mysterious, anyway, that aside, shouldn't it be
000000E0:000000DF:00000021:00000000 since motorola dragonball is big-endian?

----
unsigned long ix = 2220000; // a 32-bit variable
char hexStr[100];

MemSet(hexStr, 100, 0);
sprintf(hexStr, "%x:%x:%x:%x", (ix >> 24) & 0xff, (ix >> 16) & 0xff, (ix >>
8) & 0xff, ix & 0xff);

WinDrawChars(hexStr, StrLen(hexStr), 5, 20);
----

The output was 0:0:0:21. I don't understand why. Could be that I was using
sprintf() the wrong way?.