title: What’s the correct way to use printf to print a clock_t?
body: <p>I'm currently using a explicit cast to <code>unsigned long long</code> and using <code>%llu</code> to print it, but since <code>size_t</code> has the <code>%z</code> specifier, why doesn't <code>clock_t</code> have one?</p>
  
  <p>There isn't even a macro for it. Maybe I can assume that on an x64 system (OS and CPU) <code>size_t</code> is 8 bytes in length (and even in this case, they have provided <code>%z</code>), but what about <code>clock_t</code>?</p>