C++程序  |  19行  |  211 B

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#define __NEED_size_t
#include <bits/alltypes.h>

void* alloca(size_t);

#ifdef __GNUC__
#define alloca __builtin_alloca
#endif

#ifdef __cplusplus
}
#endif