#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);