circle2.cpp

经典的<<C how to program>一书第三版的例程。非常适合于C的初学者。

// Fig. 19.7: circle2.cpp 
// Member function definitions for class Circle
#include <iostream>

using std::cout;
using std::endl;

#include "circle2.h"

// Constructor for Circle calls constructor for Point
Circle::Circle( double r, int a, int b )
   : Point( a, b )   // call base-class constructor
{
   radius = r;  // should validate
   cout << "Circle constructor: radius is "
        << radius << " [" << x << ", " << y << ']' << endl;
}

// Destructor for class Circle
Circle::~Circle()
{
   cout << "Circle destructor:  radius is "
        << radius << " [" << x << ", " << y << ']' << endl;
}



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