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STRING(3) Library Functions Manual STRING(3)

stpcpy, stpncpy, strcat, strlcat, strncat, strchr, strrchr, strcmp, strncmp, strcasecmp, strncasecmp, strcpy, strlcpy, strncpy, strerror, strlen, strpbrk, strsep, strspn, strcspn, strstr, strtok, index, rindexstring specific functions

library “libc”

#include <string.h>

char *
stpcpy(char * restrict dst, const char * restrict src);

char *
stpncpy(char * restrict dst, const char * restrict src, size_t count);

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

size_t
strlcat(char * restrict dst, const char * restrict src, size_t count);

char *
strncat(char * restrict s, const char * restrict 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 * restrict dst, const char * restrict src);

size_t
strlcpy(char * restrict dst, const char * restrict src, size_t count);

char *
strncpy(char * restrict dst, const char * restrict 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 * restrict s, const char *restrict delim);

char *
strtok_r(char * restrict s, const char *restrict delim, char ** restrict last);

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

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

The string functions manipulate strings terminated by a null byte.

See the specific manual pages for more information. For manipulating variable length generic objects as byte strings (without the null 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), stpcpy(3), stpncpy(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), strtok_r(3)

The strcat(), strncat(), strchr(), strrchr(), strcmp(), strncmp(), strcpy(), strncpy(), strerror(), strlen(), strpbrk(), strspn(), strcspn(), strstr(), and strtok() functions conform to ISO/IEC 9899:1990 (“ISO C90”).

February 23, 2018 DragonFly-5.6.1