易百教程

import std.stdio;

class Box { 
   public: 
      double length;   // Length of a box 
      double breadth;  // Breadth of a box 
      double height;   // Height of a box 
}

void main() { 
   Box box1 = new Box();    // Declare Box1 of type Box 
   Box box2 = new Box();    // Declare Box2 of type Box 
   double volume = 0.0;     // Store the volume of a box here  

   // box 1 specification 
   box1.height = 5.0; 
   box1.length = 6.0; 
   box1.breadth = 7.0; 

   // box 2 specification 
   box2.height = 10.0; 
   box2.length = 12.0; 
   box2.breadth = 13.0;

   // volume of box 1 
   volume = box1.height * box1.length * box1.breadth; 
   writeln("Volume of Box1 : ",volume);

   // volume of box 2 
   volume = box2.height * box2.length * box2.breadth; 
   writeln("Volume of Box2 : ", volume); 
}