#pragma once #include <stddef.h> #include <sys/cdefs.h> __BEGIN_DECLS [[noreturn]] void abort(void); int abs(int); int atexit(void(*)(void)); int atoi(const char*); char* getenv(const char*); void* malloc(size_t); void* calloc(size_t, size_t); void free(void*); __END_DECLS