A simpler code

class Box { private: long l,b,h;

public:
Box()
    {
    l=0;
    b=0;
    h=0;
    BoxesCreated++;
}
Box(int length,int breadth,int height)
    {
    l=length;
    b=breadth;
    h=height;
    BoxesCreated++;

}
Box(Box &B)
    {
    l=B.l;
    b=B.b;
    h=B.h;
    BoxesCreated++;
}
~Box()
{
    BoxesDestroyed++;
}
int getLength()
{
    return l;

}
int getBreadth()
    {
    return b;

}
int getHeight()
{
    return h;

}

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

bool operator <(const Box& B)
    {
    if(l<B.l)
        return true;

    else if(b<B.b && l==B.l)
    return true;

        else if(h<B.h && b==B.b && l==B.l)
        return true;

        return false;
}
friend ostream &operator<<( ostream &output,Box D)
  { 
     output << D.getLength()<<" " <<D.getBreadth() << " " << D.getHeight();
     return output;            
  }

};