#if defined(LIBC_SCCS) && !defined(lint) static char sccsid[] = "@(#)index.c 5.2 (Berkeley) 3/9/86"; #endif LIBC_SCCS and not lint /* * Return the ptr in sp at which the character c appears; * NULL if not found */ #define NULL 0 char * index(sp, c) register char *sp, c; { do { if (*sp == c) return(sp); } while (*sp++); return(NULL); }