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STRING(3) FreeBSD Library Functions Manual STRING(3) NAME string - string specific functions LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <string.h> char * stpcpy(char *dst, const char *src); char * stpncpy(char *dst, const char *src, size_t count); char * strcat(char *s, const char * append); size_t strlcat(char *dst, const char *src, 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); int strcoll(const char *s1, const char *s2); char * strcpy(char *dst, const char *src); size_t strlcpy(char *dst, const char *src, size_t size); char * strncpy(char *dst, const char *src, size_t count); char * strerror(int errno); int strerror_r(int errnum, char *strerrbuf, size_t buflen); size_t strlen(const char *s); size_t strnlen(const char *s, size_t count); char * strpbrk(const char *s, const char *charset); char * strsep(char **stringp, const char *delim); char * stresep(char **stringp, const char *delim, int escape); size_t strspn(const char *s, const char *charset); size_t strcspn(const char *s, const char *charset); char * strdup(const char *str); char * strndup(const char *str, size_t len); char * strstr(const char *big, const char *little); char * strcasestr(const char *big, const char *little); char * strtok(char *s, const char *delim); char * strtok_r(char *s, const char *delim, char **lasts); size_t strxfrm(char *dst, const char *src, size_t n); DESCRIPTION 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. SEE ALSO bstring(3), strcat(3), strchr(3), strcmp(3), strcoll(3), strcpy(3), strcspn(3), strdup(3), strerror(3), strings(3), strlcat(3), strlen(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3), strtok(3), strxfrm(3) STANDARDS The strcat(), strncat(), strchr(), strrchr(), strcmp(), strncmp(), strcpy(), strncpy(), strcoll(), strerror(), strlen(), strpbrk(), strsep(), strspn(), strcspn(), strstr(), strtok(), and strxfrm() functions conform to ANSI X3.159-1989 ("ANSI C89"). The strtok_r() function conforms to IEEE Std 1003.1c-1995 ("POSIX.1c"). The strerror_r() function conforms to IEEE Std 1003.1-2001 ("POSIX.1"). FreeBSD 14.1-RELEASE-p8 April 26, 2017 FreeBSD 14.1-RELEASE-p8