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just wondering, in its format, why it has signed and unsigned decimal
integer, signed octal, unsigned hexdecimal. ("%d", "%u", "%o", "%x")
but does not have unsigned octal and signed hexdecimal?

In article <b24bc768-cec5-4c04-a329-c09576cda9a0
@h21g2000yqa.googlegroups.com>, says...
>
> just wondering, in its format, why it has signed and unsigned decimal
> integer, signed octal, unsigned hexdecimal. ("%d", "%u", "%o", "%x")
> but does not have unsigned octal and signed hexdecimal?

You've gotten things a bit wrong: it has signed and unsigned decimal.
Octal and hexadecimal are both (always) unsigned. The why seems to be
pretty simple: hex and octal are mostly used as compact
representations of bits, where sign is rarely desired.

--
Later,
Jerry.

On Aug 13, 8:15*pm, rockdale <rockdale.gr...@gmail.com> wrote:
> just wondering, in its format, why it has signed and unsigned decimal
> integer, *signed octal, unsigned hexdecimal. ("%d", "%u", "%o", "%x")
> but does not have unsigned octal and signed hexdecimal?

yes they have but present differently:

#include <cstdio>

int main()
{
short x=-1;
printf("%d,%o,%x\n",x,x,x);
return 0;
}

zsh/2 3070 % ./a.out
-1,37777777777,ffffffff

for hex it's ffffffff,