操作系统SunOS 4.1.3版本的源码

				#if !defined(lint) && defined(SCCSIDS)				static	char sccsid[] = "@(#)strpbrk.c 1.1 92/07/30 SMI"; /* from S5R2 1.2 */				#endif								/*LINTLIBRARY*/				/*				 * Return ptr to first occurance of any character from `brkset'				 * in the character string `string'; NULL if none exists.				 */								#define	NULL	(char *) 0								char *				strpbrk(string, brkset)				register char *string, *brkset;				{					register char *p;									do {						for(p=brkset; *p != '\0' && *p != *string; ++p)							;						if(*p != '\0')							return(string);					}					while(*string++);					return(NULL);				}