srand(time(NULL));
In 1970, IBM had replaced the System/360 line with the System/370. The 370 is，详情可参考下载安装 谷歌浏览器 开启极速安全的 上网之旅。
No base class to extend, no abstract methods to implement, no controller to coordinate with. Just an object with the right shape.，更多细节参见旺商聊官方下载
void *y = alloc(h->type, length);