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INDEX (3) | C library functions | Unix Manual Pages | :man

NAME

index, rindex - locate character in string

CONTENTS

Library
Synopsis
Description
Return Values
See Also
History

LIBRARY


.Lb libc

SYNOPSIS


.In strings.h "char *" index "const char *s" "int c" "char *" rindex "const char *s" "int c"

DESCRIPTION

The index function locates the first occurrence of c (converted to a
.Vt char ) in the string pointed to by s. The terminating null character is considered part of the string; therefore if c is ‘\0’, the functions locate the terminating ‘\0’.

The rindex function is identical to index, except it locates the last occurrence of c.

RETURN VALUES

The functions index and rindex return a pointer to the located character, or NULL if the character does not appear in the string.

SEE ALSO

memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)

HISTORY


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