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strspn
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
strspn, strcspn - get length of a prefix substring
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#include <string.h>
size_t strspn(const char *s, const char *accept);
size_t strcspn(const char *s, const char *reject);
DESCRIPTION
The
strspn()
function calculates the length (in bytes) of the initial
segment of
s
which consists entirely of bytes in
accept.
The
strcspn()
function calculates the length of the initial
segment of
s
which consists entirely of bytes not in
reject.
RETURN VALUE
The
strspn()
function returns the number of bytes in
the initial segment of
s
which consist only of bytes
from
accept.
The
strcspn()
function returns the number of bytes in
the initial segment of
s
which are not in the string
reject.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
strspn(),
strcspn()
| Thread safety | M-Safe
|
STANDARDS
C11, POSIX.-2008.
HISTORY
POSIX.-2001, C89, SVr4, 4.3BSD.
SEE ALSO
memchr(3),
strchr(3),
string(3),
strpbrk(3),
strsep(3),
strstr(3),
strtok(3),
wcscspn(3),
wcsspn(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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