string(3)

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 chars1[.n], const chars2[.n], size_tn);

Compare the first n bytes of the strings s1 and s2 ignoring case.

char *index(const char *s, intc);

Identical to strchr(3).

char *rindex(const char *s, intc);

Identical to strrchr(3).

#include <string.h>

char *stpcpy(char *restrictdest, const char *restrictsrc);

Copy a string from src to dest, returning a pointer to the end of the resulting string at dest.

char *strcat(char *restrictdest, const char *restrictsrc);

Append the string src to the string dest, returning a pointer dest.

char *strchr(const char *s, intc);

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 *restrictdest, const char *restrictsrc);

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(chardest[restrict strlen(.dest) + .n+ 1],

bash

       const char \nsrc\n[restrict .\nn\n],\n
\n       size_t \nn\n);

int strncmp(const chars1[.n], const chars2[.n], size_tn);

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, intc);

Return a pointer to the last occurrence of the character c in the string s.

char *strsep(char **restrictstringp, const char *restrictdelim);

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 *restricts, const char *restrictdelim);

Extract tokens from the string s that are delimited by one of the bytes in delim.

size_t strxfrm(chardest[restrict .n], const charsrc[restrict .n],

bash

        size_t \nn\n);

char *strncpy(chardest[restrict .n], const charsrc[restrict .n],

bash

       size_t \nn\n);

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)