toh.cpp

#include<iostream>
using namespace std;

void toh(int n,int a,int b,int c)
{
	if(n>0)
	{
		toh(n-1,a,c,b);
		cout<<a<<"-"<<c<<endl;
		toh(n-1,b,a,c);
	}
}
int main(int argc,char *argv[])
{
	int n;
	if(argc==2)
		n=stoi(argv[1]);
	else
	{
		cout<<"Enter number of disks= ";
		cin>>n;
	}
		toh(n,1,2,3);
	return 0;
}