hex.h

   1 #include <stdio.h>
   2
   3 static const char hext[] = "0123456789ABCDEF";
   4 static void printhex(const char *z, size_t l)
   5 {
   6         printf("[");
   7         for (size_t i = 0; i < l; ++i) {
   8                 printf("%c%c", hext[*z >> 4], hext[*z & 0xF]);
   9                 ++z;
  10         }
  11         printf("]\n");
  12 }