Re: wsprintf I64 - how to get it to include a plus sign ?

On Thu, 1/8/2026 2:00 AM, R.Wieser wrote:
> Paul,
> 
>> Generated 45 characters
>>
>> Pack my box with  +5000000000000  liquor jugs
> 
> Hmmm....   It works for you, but not for me.  Did you use XP or some other, 
> later version ?
> 
> By the way, quite the box you have there. :-)
> 
> Regards,
> Rudy Wieser
> 
> 

The routine you were using, was supposed to be a "legacy"
version with no floating point printout capability.
The "w" stands for "wombat" rather than "wide". That's what
a Google was telling me. So I switched to another print
variant that a couple of posts suggested would be
a successor to it.

I did my compiling in a mingw64 variant, because I wasn't sure whether
the original mingw had "c99".

If I could have copy/pasted any text examples using hex strings,
to flesh out the wide characters, I would have. But nothing
presented itself that I could copy.

The leading "+" as a sign indicator [ %+lld ], seems to work. Running
the program with a negative number, prints out a sign too.

$ ./wide
Generated 45 characters

Pack my box with  -5000000000000  liquor jugs

*******

Using "history" in the terminal, it looks like the first sub-package
I populated was this one.

pacman -S mingw-w64-ucrt-x86_64-gcc

pacman -Ss  gcc

So I added a couple more. These are in a way, cross compilers by
naming convention, but doing x86-to-x86 or something.

 pacman -S mingw64/mingw-w64-x86_64-gcc
 pacman -S mingw32/mingw-w64-i686-gcc

 MINGW32 ~
$ gcc -m64 -std=c99 -o wide.exe wide.c
cc1.exe: sorry, unimplemented: 64-bit mode not compiled in

 MINGW32 ~
$ gcc -m32 -std=c99 -o wide.exe wide.c

$ ./wide
Generated 18 characters

P -5000000000000

And then it doesn't work right.

 MINGW64 ~
$ gcc -m64 -std=c99 -o wide.exe wide.c

 MINGW64 ~
$ ./wide
Generated 18 characters

P -5000000000000

Nope. and gcc -m32  does not link there.

So whatever UCRT does, seems to work.

*******

If I take it over to the original MINGW, then only
one flavor would be supported.

gcc  -std=c99 -o wide.exe wide.c

   16 |    int len = swprintf( buf, 100, L"%s %+lld %s", L"Pack my box with ", i, L" liquor jugs" );
      |              ^~~~~~~~
      |              snwprintf

Fixing that, gives

$ ./wide
Generated 45 characters

Pack my box with  -5000000000000  liquor jugs

And the final program is:

/* #include <stdint.h> */
/* #include <inttypes.h> */
#include <stdio.h>

/* gcc      -std=c99 -o wide.exe wide.c */

int main( void )
{
   wchar_t buf[100];
   /* int64_t i; */
   long long int i;

   i = -5000000000000 ;

   int len = snwprintf( buf, 100, L"%s %+lld %s", L"Pack my box with ", i, L" liquor jugs" );
   printf( "Generated %d characters\n\n", len );

   wprintf(L"%ls\n\n", buf);
}

   Paul








   Paul