while(choose != 1 || choose != 2)
	{
		cin >> choose;
		if(choose != 1 && choose != 2) cout << "输入错误,请再输入: ";
		else break;
	}

int choose=1;
    while(choose <= 1 && choose >= 2)
	{
		cin >> choose;
		if(choose <= 1 || choose >= 2) cout << "输入错误,请再输入: ";
		else break;
	}

这两个好像没啥区别，为啥上面的行，下面的不行呢？