#ifndef STDLIB_H#define STDLIB_Htypedefint ssize_t;typedefunsigned int size_t;void__attribute__((noreturn))exit(int);void*malloc(size_t);void*calloc(size_t,size_t);voidfree(void*);externunsigned long intstrtoul(const char*nptr,char**endptr,int base);#endif