string
Section: C Library Functions (3)
Updated: 2023-01-22
Index
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NAME
stpcpy, strcasecmp, strcat, strchr, strcmp, strcoll, strcpy, strcspn,
strdup, strfry, strlen, strncat, strncmp, strncpy, strncasecmp, strpbrk,
strrchr, strsep, strspn, strstr, strtok, strxfrm, index, rindex
- string operations
LIBRARY
Standard C library
(libc, -lc)
SYNOPSIS
#include <strings.h>
- int strcasecmp(const char *s1, const char *s2);
-
Compare the strings
s1
and
s2
ignoring case.
- int strncasecmp(const char s1[.n], const char s2[.n], size_t n);
-
Compare the first
n
bytes of the strings
s1
and
s2
ignoring case.
- char *index(const char *s, int c);
-
Identical to
strchr(3).
- char *rindex(const char *s, int c);
-
Identical to
strrchr(3).
- #include <string.h>
-
- char *stpcpy(char *restrict dest, const char *restrict src);
-
Copy a string from
src
to
dest,
returning a pointer to the end of the resulting string at
dest.
- char *strcat(char *restrict dest, const char *restrict src);
-
Append the string
src
to the string
dest,
returning a pointer
dest.
- char *strchr(const char *s, int c);
-
Return a pointer to the first occurrence of the character
c
in the string
s.
- int strcmp(const char *s1, const char *s2);
-
Compare the strings
s1
with
s2.
- int strcoll(const char *s1, const char *s2);
-
Compare the strings
s1
with
s2
using the current locale.
- char *strcpy(char *restrict dest, const char *restrict src);
-
Copy the string
src
to
dest,
returning a pointer to the start of
dest.
- size_t strcspn(const char *s, const char *reject);
-
Calculate the length of the initial segment of the string
s
which does not contain any of bytes in the string
reject,
- char *strdup(const char *s);
-
Return a duplicate of the string
s
in memory allocated using
malloc(3).
- char *strfry(char *string);
-
Randomly swap the characters in
string.
- size_t strlen(const char *s);
-
Return the length of the string
s.
- char *strncat(char dest[restrict strlen(.dest) + .n + 1],
const char src[restrict .n],
size_t n);
Append at most
n
bytes from the unterminated string
src
to the string
dest,
returning a pointer to
dest.
- int strncmp(const char s1[.n], const char s2[.n], size_t n);
-
Compare at most
n
bytes of the strings
s1
and
s2.
- char *strpbrk(const char *s, const char *accept);
-
Return a pointer to the first occurrence in the string
s
of one of the bytes in the string
accept.
- char *strrchr(const char *s, int c);
-
Return a pointer to the last occurrence of the character
c
in the string
s.
- char *strsep(char **restrict stringp, const char *restrict delim);
-
Extract the initial token in
stringp
that is delimited by one of the bytes in
delim.
- size_t strspn(const char *s, const char *accept);
-
Calculate the length of the starting segment in the string
s
that consists entirely of bytes in
accept.
- char *strstr(const char *haystack, const char *needle);
-
Find the first occurrence of the substring
needle
in the string
haystack,
returning a pointer to the found substring.
- char *strtok(char *restrict s, const char *restrict delim);
-
Extract tokens from the string
s
that are delimited by one of the bytes in
delim.
- size_t strxfrm(char dest[restrict .n], const char src[restrict .n],
size_t n);
Transforms
src
to the current locale and copies the first
n
bytes to
dest.
Obsolete functions
- char *strncpy(char dest[restrict .n], const char src[restrict .n],
size_t n);
Copy at most
n
bytes from string
src
to
dest,
returning a pointer to the start of
dest.
DESCRIPTION
The string functions perform operations on null-terminated
strings.
See the individual man pages for descriptions of each function.
SEE ALSO
bstring(3),
stpcpy(3),
strcasecmp(3),
strcat(3),
strchr(3),
strcmp(3),
strcoll(3),
strcpy(3),
strcspn(3),
strdup(3),
strfry(3),
strlen(3),
strncasecmp(3),
strncat(3),
strncmp(3),
strncpy(3),
strpbrk(3),
strrchr(3),
strsep(3),
strspn(3),
strstr(3),
strtok(3),
strxfrm(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- Obsolete functions
-
- DESCRIPTION
-
- SEE ALSO
-
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Time: 10:08:50 GMT, May 06, 2024