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Man Pages


Manual Reference Pages  -  STRSPN (3)

NAME

strspn, strcspn - span a string

CONTENTS

Library
Synopsis
Description
Return Values
See Also
Standards

LIBRARY


.Lb libc

SYNOPSIS


.In string.h size_t strspn const char *s const char *charset size_t strcspn const char *s const char *charset

DESCRIPTION

The strspn function spans the initial part of the null-terminated string s as long as the characters from s occur in the null-terminated string charset. In other words, it computes the string array index of the first character of s which is not in charset, else the index of the first null character.

The strcspn function spans the initial part of the null-terminated string s as long as the characters from s do not occur in the null-terminated string charset (it spans the complement of charset ). In other words, it computes the string array index of the first character of s which is also in charset, else the index of the first null character.

RETURN VALUES

The strspn and strcspn functions return the number of characters spanned.

SEE ALSO

memchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strstr(3), strtok(3), wcsspn(3)

STANDARDS

The strspn and strcspn functions conform to -isoC.
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