3 @deftypefn Supplemental char* strdup (const char *@var{s})
5 Returns a pointer to a copy of @var{s} in memory obtained from
6 @code{malloc}, or @code{NULL} if insufficient memory was available.
15 extern size_t strlen (const char*);
16 extern PTR malloc (size_t);
17 extern PTR memcpy (PTR, const PTR, size_t);
22 size_t len = strlen (s) + 1;
23 char *result = (char*) malloc (len);
24 if (result == (char*) 0)
26 return (char*) memcpy (result, s, len);