#ifndef NULL
#define	NULL		0
#endif

#define strchr	strindex
#define strrchr strrindex

extern char *	strcat();
extern char *	strchr();
extern int	strcmp();
extern char *	strcpy();
extern int	strlen();
extern char *	strncat();
extern int	strncmp();
extern char *	strncpy();
extern char *	strrchr();