{

vector<string> channelList = { "新闻频道", "财经频道", "体育频道", "电影频道", "音乐频道", "农业频道", "四川卫视", "成都卫视" };

// 创建电视

Television *tv = new Television(channelList);

// 创建遥控器

Iterator *remoteControl = tv->createIterator();

// 顺序遍历

printf("顺序遍历:\n");

remoteControl->first();

// 遍历电视所有频道

while (remoteControl->hasNext()){

remoteControl->currentChannel();

remoteControl->next();

}

printf("\n\n");

// 逆序遍历

printf("逆序遍历:\n");

remoteControl->last();

// 遍历电视所有频道

while (remoteControl->hasPrevious()){

remoteControl->currentChannel();

remoteControl->previous();

}

printf("\n\n");

system("pause");

delete tv;

delete remoteControl;

return 0;

}