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

char *ptr;

void
use_with_malloc (char *p, int plen, char *q, int qlen)
{
  ptr = malloc (plen + qlen + 1);
#ifdef FAST
  strcpy (ptr, p);
  strcat (ptr, q);
#else
  sprintf (ptr, "%s%s", p, q);
#endif
  (void) ptr;
  free (ptr);
}

void
use_with_alloca (char *p, int plen, char *q, int qlen)
{
  ptr = alloca (plen + qlen + 1);
#ifdef FAST
  strcpy (ptr, p);
  strcat (ptr, q);
#else
  sprintf (ptr, "%s%s", p, q);
#endif
  (void) ptr;
}