Listing 12 "Hello, World!" with the new C++ digraphs and tokens

/* dhello.c:    Greeting program using C++ digraphs */
#include <stdio.h>

main(int argc, char *argv<::>)
<%
   if (argc> 1 and argv<:0:> != NULL)
      printf("Hello, %s!??/n",argv<:1:>);
   else
      printf("Hello, world!??/n");
   return 0;
%>

/* End of File */