#ifndef STRING_H #define STRING_H #include void* memchr(const void* s, int c, size_t n); int memcmp(const void* s1, const void* s2, size_t n); void *memcpy(void *s1, const void *s2, size_t n); void *memmove(void* s1, const void* s2, size_t n); void* memset(void*s, int c, size_t n); char *strncat(char *s1, const char *s2, size_t n); int strncmp(const char *s1, const char *s2, size_t n); char *strncpy(char *s1, const char *s2, size_t n); char *strcat(char *s1, const char *s2); int strcmp(const char *s1, const char * s2); char *strcpy(char *s1, const char * s2); size_t strlen(const char *s); char *strchr(const char *s, int c); size_t strcspn(const char *s1, const char * s2); #endif