8-3.cpp

为初学者提供的最佳的C++程序设计源程序库

#include<iostream.h>
class box
{
   double line,width,heigth;
   double volume;
public:
   box(double a,double b,double c);
   void vol();
};
box::box(double a,double b,double c)
{
   line=a;
   width=b;
   heigth=c;
   volume=line*heigth;
}
void box::vol()
{
   cout<<"Volume is:"<<volume<<"\n";
}
main()
{
   box x(3.4,4.5,8.5),y(2.0,4.0,6.0);
   x.vol();
   y.vol();
   return 0;
}