/*LINTLIBRARY*//* * Return the ptr in sp at which the character c appears; * NULL if not found *//* static char *sccs_id = "@(#)strchr.c	1.2 12/8/89 ESI, ATT"; */#define	NULL	0char *strchr(sp, c)register char *sp, c;{	do {		if(*sp == c)			return(sp);	} while(*sp++);	return(NULL);}