>perl -le"print length qq{\n}"
1

>perl -le"print unpack 'H*', qq{\n}"
0a

##</code><code>##

#include <string.h>
#include <stdio.h>

int main() {
   printf("%d\n", strlen("\n"));

   {
      const char* p = "\n";
      while (*p) {
         printf("%02x", *(p++));
      }
      printf("\n");
   }

   return 0;
}

##</code><code>##

1
0a