Re: "A diagram of C23 basic types"

On 04/04/2025 04:01, Lawrence D'Oliveiro wrote:

On Wed, 2 Apr 2025 16:33:46 +0100, bart wrote:
 

Here, tell me at a glance the magnitude of
this number:
>
      10000000000 

 
     #define THOUSAND 1000
     #define MILLION (THOUSAND * THOUSAND)
     #define BILLION (THOUSAND * MILLION)
 
     uint64 num = 10 * BILLION;
 
Much easier to figure out, don’t you think? 

 
Try 20 * BILLION; it will overflow if not careful.
 
I'd normally write '20 billion' outside of C, since I use such
numbers, with lots of zeros, constantly when writing test code.
 
But when it isn't all zeros, or the base isn't 10, then numeric
separators are better.