+extern char *strchr(char *str, int character);
+extern char *strrchr(char *str, int character);
+extern char *strstr(char *str1, const char *str2);
+
+// Memory
+extern void *memset(void *dest, int val, size_t count);
+extern void *memcpy(void *dest, const void *src, size_t count);
+extern void *memmove(void *dest, const void *src, size_t count);
+extern int memcmp(const void *mem1, const void *mem2, size_t count);
+extern void *memchr(void *ptr, int value, size_t num);