汉诺塔问题

有三根杆子A，B，C。A杆上有N个(N>1)穿孔圆盘，盘的尺寸由下到上依次变小。要求按下列规则将所有圆盘移至C杆：

每次只能移动一个圆盘；大盘不能叠在小盘上面。问：如何移？最少要移动多少次？

#include<iostream>
using namespace std;
void hannoi(int n,char from, char buffer, char to)
{
	if(n==1)
	{
		cout<<"Move desk "<<"from "<<from<<" to "<<to<<endl;
	}
	else
	{
		hannoi(n-1,from,to,buffer);
		cout<<"Move desk "<<"from "<<from<<" to "<<to<<endl;
		hannoi(n-1,buffer,from,to);
	}
}
int main()
{
	int n;
	cin>>n;
	hannoi(n,'A','B','C');
	return 0;
}