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
Standard C library (libc, -lc)
#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.
- 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.
The string functions perform operations on null-terminated
strings. See the individual man pages for descriptions of each function.
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)