extern void atexit(void (*__func)(void));\r
extern void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *));\r
extern void atexit(void (*__func)(void));\r
extern void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *));\r