C++ Tutorial/Operator Overloading/overload logic operator

The overloaded "less-than" operators with double value

<source lang="cpp">#include <iostream>

1. include <cstdlib> // For random number generator
2. include <ctime> // For time function

using std::cout; using std::endl; class Box {

 public:
   Box(double aLength, double aWidth, double aHeight):length(aLength), width(a

Width), height(aHeight) {}

   double volume() const {
     return length*width*height;
   }
   double getLength()  const { return length; }
   double getWidth() const { return width; }
   double getHeight()  const { return height; }
   inline bool operator<(const Box& aBox) const {
     return volume() < aBox.volume();
   }
   inline bool operator<(const double aValue) const {
     return volume() < aValue;
   }

 private:
   double length;
   double width;
   double height;

};

int main() {

 Box firstBox(17.0, 11.0, 5.0);
 if(firstBox < 100000){
   cout << "less than";
 }else{
   cout << "not less than";
 }
 return 0;

}</source>

less than