index and rindex

index returns a pointer to the first occurrence of a single character in a null-terminated character string. If the character does not occur in the string, index returns a NULL pointer. In the SunOS 5.x release, strchr replaces index, see string(3C).

rindex returns a pointer to the last occurrence of a single character in a null-terminated string, or a NULL pointer if the letter does not occur in the string. In the SunOS 5.x release, strrchr replaces rindex, see string(3C).

These routines are not available in the default SunOS 5.x release.