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| From | Tim Rentsch <tr.17687@z991.linuxsc.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: is it possible to have functions with 0, 1, or 2 args? |
| Date | 2024-08-12 02:28 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <8634naccp3.fsf@linuxsc.com> (permalink) |
| References | <7q-dnbTDU4oBES37nZ2dnZfqnPednZ2d@brightview.co.uk> <20240805151946.00000bce@yahoo.com> <86wmkmfhaz.fsf@linuxsc.com> <v9chcl$37e8f$1@dont-email.me> |
Richard Harnden <richard.nospam@gmail.invalid> writes: > On 12/08/2024 06:20, Tim Rentsch wrote: > >> Michael S <already5chosen@yahoo.com> writes: >> >>> On Mon, 05 Aug 2024 08:26:04 +0000 >>> Mark Summerfield <mark@qtrac.eu> wrote: >>> >>> According to my understanding, vararg functions without arguments will >>> become possible in C23. But since fully functional C23 compilers do not >>> exist yet, right now the answer to your question is "No". >> >> Even in C99 varargs functions can be called without arguments. >> The question here is more subtle. In fact it is possible even >> in C99 and C11 to do what he wants, but it isn't easy, and it >> is far from obvious how to go about it. Still, if the question >> is "can this be done?", the answer is Yes even now. > > How does va_start know where to, um, start from if there's no last > named argument? Sorry, I meant to say macros, not functions (using ... and __VA_ARGS__). The original question is about macro definitions, not function definitions, and I didn't read carefully enough.
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is it possible to have functions with 0, 1, or 2 args? Mark Summerfield <mark@qtrac.eu> - 2024-08-05 08:26 +0000
Re: is it possible to have functions with 0, 1, or 2 args? Michael S <already5chosen@yahoo.com> - 2024-08-05 15:19 +0300
Re: is it possible to have functions with 0, 1, or 2 args? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-11 22:20 -0700
Re: is it possible to have functions with 0, 1, or 2 args? Richard Harnden <richard.nospam@gmail.invalid> - 2024-08-12 09:33 +0100
Re: is it possible to have functions with 0, 1, or 2 args? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-12 02:28 -0700
Re: is it possible to have functions with 0, 1, or 2 args? Richard Harnden <richard.nospam@gmail.invalid> - 2024-08-12 11:37 +0100
Re: is it possible to have functions with 0, 1, or 2 args? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-12 15:39 -0700
Re: is it possible to have functions with 0, 1, or 2 args? Blue-Maned_Hawk <bluemanedhawk@invalid.invalid> - 2024-08-05 18:46 +0000
Re: is it possible to have functions with 0, 1, or 2 args? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-08-07 23:04 +0000
Re: is it possible to have functions with 0, 1, or 2 args? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-11 10:43 -0700
Re: is it possible to have functions with 0, 1, or 2 args? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-08-11 22:15 -0700
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