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STRING(3) Library Functions Manual STRING(3)

string
string specific functions

#include <string.h>

char *
strcat(char *s, const char *append);

char *
strlcat(char *s, const char *append, size_t size);

char *
strncat(char *s, const char *append, size_t count);

char *
strchr(const char *s, int c);

char *
strrchr(const char *s, int c);

int
strcmp(const char *s1, const char *s2);

int
strncmp(const char *s1, const char *s2, size_t count);

int
strcasecmp(const char *s1, const char *s2);

int
strncasecmp(const char *s1, const char *s2, size_t count);

char *
strcpy(char *dst, const char *src);

char *
strlcpy(char *dst, const char *src, size_t size);

char *
strncpy(char *dst, const char *src, size_t count);

char *
strerror(int errno);

size_t
strlen(const char *s);

char *
strpbrk(const char *s, const char *charset);

char *
strsep(char **stringp, const char *delim);

size_t
strspn(const char *s, const char *charset);

size_t
strcspn(const char *s, const char *charset);

char *
strstr(const char *big, const char *little);

char *
strtok(char *s, const char *delim);

char *
index(const char *s, int c);

char *
rindex(const char *s, int c);

The string functions manipulate strings terminated by a NUL byte.

See the specific manual pages for more information. For manipulating variable length generic objects as byte strings (without the NUL-byte check), see bstring(3).

Except as noted in their specific manual pages, the string functions do not test the destination for size limitations.

bstring(3), index(3), rindex(3), strcasecmp(3), strcat(3), strchr(3), strcmp(3), strcpy(3), strcspn(3), strerror(3), strlcat(3), strlcpy(3), strlen(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3)

The strcat(), strncat(), strchr(), strrchr(), strcmp(), strncmp(), strcpy(), strncpy(), strerror(), strlen(), strpbrk(), strspn(), strcspn(), strstr(), and strtok() functions conform to ANSI X3.159-1989 (“ANSI C89”).
May 31, 2007 OpenBSD-5.1