table of contents
strspn(3) | Library Functions Manual | strspn(3) |
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 | MT-Safe |
STANDARDS¶
C11, POSIX.1-2008.
HISTORY¶
POSIX.1-2001, C89, SVr4, 4.3BSD.
SEE ALSO¶
memchr(3), strchr(3), string(3), strpbrk(3), strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)
2023-07-20 | Linux man-pages 6.05.01 |