#ifndef __STRING_H #define __STRING_H #include size_t strlen(const char *p); size_t strnlen(const char *p, size_t maxlen); char *strcpy(char *dest, const char *src); char *strncpy(char *dest, const char *src, size_t maxlen); int strcmp(const char *s1, const char *s2); int strncmp(const char *s1, const char *s2, size_t n); char *strstr(const char *haystack, const char *needle); void *memcpy(void *dest, const void *src, size_t n); void *memcpy_long(void *dest, const void *src, size_t n); int memcmp(const void *s1, const void *s2, size_t n); void *memset(void *s, int n, size_t l); unsigned long strtol(const char *cp, char **endp, unsigned int base); #endif