#include <stddef.h>

extern void *memcpy(void *, const void *, size_t);
extern void *memmove(void *, const void *, size_t);
extern char *strcpy(char *, const char *);
extern char *strncpy(char *, const char *, size_t);
extern char *strcat(char *, const char *);
extern char *strncat(char *, const char *,size_t);
extern int  memcmp(const void *, const void *,size_t);
extern int  strcmp(const char *, const char *);
extern int  strncmp(const char *, const char *, size_t);
extern void *memchr(const void *, int, size_t);
extern char *strchr(const char *, int);
extern size_t strcspn(const char *, const char *);
extern char *strpbrk(const char *, const char *);
extern char *strrchr(const char *, int);
extern size_t strspn(const char *, const char *);
extern char *strstr(const char *, const char *);
extern char *strtok(char *, const char *);
extern void *memset(void *, int, size_t);
extern char *strerror(int);
extern size_t strlen(const char *);

