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devel / comp.lang.c / skipping spaces in a sprintf format

SubjectAuthor
* skipping spaces in a sprintf formatLynn McGuire
`* Re: skipping spaces in a sprintf formatBart
 `* Re: skipping spaces in a sprintf formatManfred
  +- Re: skipping spaces in a sprintf formatBart
  +- Re: skipping spaces in a sprintf formatLynn McGuire
  `* Re: skipping spaces in a sprintf formatLynn McGuire
   `- Re: skipping spaces in a sprintf formatMike Terry

1
skipping spaces in a sprintf format

<tjhlc0$36ic6$1@dont-email.me>

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From: lynnmcgu...@gmail.com (Lynn McGuire)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: skipping spaces in a sprintf format
Date: Fri, 28 Oct 2022 17:33:36 -0500
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 by: Lynn McGuire - Fri, 28 Oct 2022 22:33 UTC

Is there any way to skip spaces in a sprintf format ? In Fortran, one
puts 10x to skip ten spaces.

I am using the following right now:

// WRITE (OUFILE,1700) current_page
// 1700 FORMAT (67X,'PAGE:',I8)
sprintf (termin1.outbuffer, "
PAGE:%8d", prglab1.current_page);
outwri (termin1.outbuffer);

Thanks,
Lynn

Re: skipping spaces in a sprintf format

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From: bc...@freeuk.com (Bart)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Fri, 28 Oct 2022 23:47:50 +0100
Organization: Aioe.org NNTP Server
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 by: Bart - Fri, 28 Oct 2022 22:47 UTC

On 28/10/2022 23:33, Lynn McGuire wrote:
> Is there any way to skip spaces in a sprintf format ?  In Fortran, one
> puts 10x to skip ten spaces.
>
> I am using the following right now:
>
>     // WRITE (OUFILE,1700) current_page
>     // 1700    FORMAT (67X,'PAGE:',I8)
>    sprintf (termin1.outbuffer, "                           PAGE:%8d",
> prglab1.current_page);
>    outwri (termin1.outbuffer);
>
> Thanks,
> Lynn

This prints a string within a field of 10 spaces:

printf("<%*s>\n",10,"");

"*" is used for a variable field width, padded on the left. "%-*s" will
pad on the right.

Re: skipping spaces in a sprintf format

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From: non...@add.invalid (Manfred)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Sat, 29 Oct 2022 01:45:13 +0200
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 by: Manfred - Fri, 28 Oct 2022 23:45 UTC

On 10/29/2022 12:47 AM, Bart wrote:
> On 28/10/2022 23:33, Lynn McGuire wrote:
>> Is there any way to skip spaces in a sprintf format ?  In Fortran, one
>> puts 10x to skip ten spaces.
>>
>> I am using the following right now:
>>
>>      // WRITE (OUFILE,1700) current_page
>>      // 1700    FORMAT (67X,'PAGE:',I8)
>>     sprintf (termin1.outbuffer, "                           PAGE:%8d",
>> prglab1.current_page);
>>     outwri (termin1.outbuffer);
>>
>> Thanks,
>> Lynn
>
> This prints a string within a field of 10 spaces:
>
>     printf("<%*s>\n",10,"");
>
> "*" is used for a variable field width, padded on the left. "%-*s" will
> pad on the right.
>
>

Simpler, and probably closer to what the OP needs:

sprintf (termin1.outbuffer, "%32s%8d", "PAGE:", prglab1.current_page);
outwri (termin1.outbuffer);

Re: skipping spaces in a sprintf format

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From: bc...@freeuk.com (Bart)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Sat, 29 Oct 2022 11:08:30 +0100
Organization: Aioe.org NNTP Server
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 by: Bart - Sat, 29 Oct 2022 10:08 UTC

On 29/10/2022 00:45, Manfred wrote:
> On 10/29/2022 12:47 AM, Bart wrote:
>> On 28/10/2022 23:33, Lynn McGuire wrote:
>>> Is there any way to skip spaces in a sprintf format ?  In Fortran,
>>> one puts 10x to skip ten spaces.
>>>
>>> I am using the following right now:
>>>
>>>      // WRITE (OUFILE,1700) current_page
>>>      // 1700    FORMAT (67X,'PAGE:',I8)
>>>     sprintf (termin1.outbuffer, "
>>> PAGE:%8d", prglab1.current_page);
>>>     outwri (termin1.outbuffer);
>>>
>>> Thanks,
>>> Lynn
>>
>> This prints a string within a field of 10 spaces:
>>
>>      printf("<%*s>\n",10,"");
>>
>> "*" is used for a variable field width, padded on the left. "%-*s"
>> will pad on the right.
>>
>>
>
> Simpler, and probably closer to what the OP needs:
>
> sprintf (termin1.outbuffer, "%32s%8d", "PAGE:", prglab1.current_page);
> outwri (termin1.outbuffer);

I thought I'd missed the obvious solution..

Re: skipping spaces in a sprintf format

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From: lynnmcgu...@gmail.com (Lynn McGuire)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Sat, 29 Oct 2022 14:02:37 -0500
Organization: Aioe.org NNTP Server
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 by: Lynn McGuire - Sat, 29 Oct 2022 19:02 UTC

On 10/28/2022 6:45 PM, Manfred wrote:
> On 10/29/2022 12:47 AM, Bart wrote:
>> On 28/10/2022 23:33, Lynn McGuire wrote:
>>> Is there any way to skip spaces in a sprintf format ?  In Fortran,
>>> one puts 10x to skip ten spaces.
>>>
>>> I am using the following right now:
>>>
>>>      // WRITE (OUFILE,1700) current_page
>>>      // 1700    FORMAT (67X,'PAGE:',I8)
>>>     sprintf (termin1.outbuffer, "
>>> PAGE:%8d", prglab1.current_page);
>>>     outwri (termin1.outbuffer);
>>>
>>> Thanks,
>>> Lynn
>>
>> This prints a string within a field of 10 spaces:
>>
>>      printf("<%*s>\n",10,"");
>>
>> "*" is used for a variable field width, padded on the left. "%-*s"
>> will pad on the right.
>>
>>
>
> Simpler, and probably closer to what the OP needs:
>
> sprintf (termin1.outbuffer, "%32s%8d", "PAGE:", prglab1.current_page);
> outwri (termin1.outbuffer);

Thank you both !

Lynn

Re: skipping spaces in a sprintf format

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From: lynnmcgu...@gmail.com (Lynn McGuire)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Sat, 29 Oct 2022 15:55:19 -0500
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 by: Lynn McGuire - Sat, 29 Oct 2022 20:55 UTC

On 10/28/2022 6:45 PM, Manfred wrote:
> On 10/29/2022 12:47 AM, Bart wrote:
>> On 28/10/2022 23:33, Lynn McGuire wrote:
>>> Is there any way to skip spaces in a sprintf format ?  In Fortran,
>>> one puts 10x to skip ten spaces.
>>>
>>> I am using the following right now:
>>>
>>>      // WRITE (OUFILE,1700) current_page
>>>      // 1700    FORMAT (67X,'PAGE:',I8)
>>>     sprintf (termin1.outbuffer, "
>>> PAGE:%8d", prglab1.current_page);
>>>     outwri (termin1.outbuffer);
>>>
>>> Thanks,
>>> Lynn
>>
>> This prints a string within a field of 10 spaces:
>>
>>      printf("<%*s>\n",10,"");
>>
>> "*" is used for a variable field width, padded on the left. "%-*s"
>> will pad on the right.
>>
>>
>
> Simpler, and probably closer to what the OP needs:
>
> sprintf (termin1.outbuffer, "%32s%8d", "PAGE:", prglab1.current_page);
> outwri (termin1.outbuffer);

Or,

sprintf (termin1.outbuffer, "%66sPAGE:%8d", " ", prglab1.current_page);
outwri (termin1.outbuffer);

Thanks !

Lynn

Re: skipping spaces in a sprintf format

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From: news.dea...@darjeeling.plus.com (Mike Terry)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: skipping spaces in a sprintf format
Date: Sat, 29 Oct 2022 22:29:50 +0100
Organization: Aioe.org NNTP Server
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 by: Mike Terry - Sat, 29 Oct 2022 21:29 UTC

On 29/10/2022 21:55, Lynn McGuire wrote:
> On 10/28/2022 6:45 PM, Manfred wrote:
>> On 10/29/2022 12:47 AM, Bart wrote:
>>> On 28/10/2022 23:33, Lynn McGuire wrote:
>>>> Is there any way to skip spaces in a sprintf format ?  In Fortran, one puts 10x to skip ten spaces.
>>>>
>>>> I am using the following right now:
>>>>
>>>>      // WRITE (OUFILE,1700) current_page
>>>>      // 1700    FORMAT (67X,'PAGE:',I8)
>>>>     sprintf (termin1.outbuffer, " PAGE:%8d", prglab1.current_page);
>>>>     outwri (termin1.outbuffer);
>>>>
>>>> Thanks,
>>>> Lynn
>>>
>>> This prints a string within a field of 10 spaces:
>>>
>>>      printf("<%*s>\n",10,"");
>>>
>>> "*" is used for a variable field width, padded on the left. "%-*s" will pad on the right.
>>>
>>>
>>
>> Simpler, and probably closer to what the OP needs:
>>
>> sprintf (termin1.outbuffer, "%32s%8d", "PAGE:", prglab1.current_page);
>> outwri (termin1.outbuffer);
>
> Or,
>
>   sprintf (termin1.outbuffer, "%66sPAGE:%8d", " ", prglab1.current_page);
>   outwri (termin1.outbuffer);
>

I'd suggest a minor improvement: ..."%66sPage:%8d", "",...

Looking at:
printf ("==%0s==\n", " ");
printf ("==%0s==\n", "");
We get output
== ==
====

So I could say the empty string works more universally, and SAVES A BYTE OF DISK SPACE!!! :) Well,
probably you would never want to skip 0 spaces, but hey... (it can't be bad to handle edge cases,
even if you're convinced you'll never use them.)

Mike.

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