Box It HRANK problem in c++

box-it.cpp

// This source code written by Roland Ihasz 

#include<bits/stdc++.h>
// #include <iostream>

using namespace std;
class Box {
private:
    int l, b, h;

public:
    Box()
    {
        l = 0;
        b = 0;
        h = 0;
    }
    Box(int length, int breadth, int height)
    {
        l = length;
        b = breadth;
        h = height;
    }
    Box(const Box &B)
    {
        l = B.l;
        b = B.b;
        h = B.h;
    }

    int getLenght()
    {
        return l;
    }

    int getBreadth()
    {
        return b;
    }

    int getHeight()
    {
        return h;
    }

    long long CalculateVolume()
    {
        return (long long)l*b*h;
    }

    friend bool operator<(Box &A, Box &B)
    {
        return (A.l < B.l) || ((A.b < B.b) && (A.l == B.l)) ||
               ((A.h < B.h) && (A.l == B.l) && (A.b == B.b));
    }

    friend ostream &operator<<(ostream &output, const Box &B)
    {
        output << B.l << " " << B.b << " " << B.h;
        return output;
    }
};

void check2()
{
	int n;
	cin>>n;
	Box temp;
	for(int i=0;i<n;i++)
	{
		int type;
		cin>>type;
		if(type ==1)
		{
			cout<<temp<<endl;
		}
		if(type == 2)
		{
			int l,b,h;
			cin>>l>>b>>h;
			Box NewBox(l,b,h);
			temp=NewBox;
			cout<<temp<<endl;
		}
		if(type==3)
		{
			int l,b,h;
			cin>>l>>b>>h;
			Box NewBox(l,b,h);
			if(NewBox<temp)
			{
				cout<<"Lesser\n";
			}
			else
			{
				cout<<"Greater\n";
			}
		}
		if(type==4)
		{
			cout<<temp.CalculateVolume()<<endl;
		}
		if(type==5)
		{
			Box NewBox(temp);
			cout<<NewBox<<endl;
		}

	}
}

int main()
{
	check2();
}