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   comp.lang.c      Meh, in C you gotta define EVERYTHING      243,242 messages   

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   Message 242,778 of 243,242   
   Michael S to Andrey Tarasevich   
   Re: printf and time_t   
   05 Jan 26 10:51:38   
   
   From: already5chosen@yahoo.com   
      
   On Mon, 5 Jan 2026 00:17:07 -0800   
   Andrey Tarasevich  wrote:   
      
   > On Sun 1/4/2026 11:19 PM, Kenny McCormack wrote:   
   > > The question is: How can you reliably printf() a time_t value?   
   > > What conversion spec should you use?   
   >   
   > You can't. As far as the language is concerned, `time_t` is intended   
   > to be an opaque type. It has to be a real type, so it is either an   
   > integer of a plain floating-point type. But other than that nothing   
   > is known about it. There's really no point in printing it.   
   >   
   > If you still want to, you can do it in some implementation-specific   
   > way. Which still immediately means that you can't do it "reliably",   
   > if I understand what you mean correctly.   
   >   
      
   I can't think about situation in which casting time_t value to 'long   
   long' can go wrong.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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