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/* File : example.c */
#include "example.h"
#include <stdio.h>
#define M_PI 3.14159265358979323846
// Static member initializer
int Shape::nshapes = 0;
// Constructor
Shape::Shape() {
nshapes++;
}
// Move the shape to a new location
void Shape::move(double dx, double dy) {
x += dx;
y += dy;
}
// Destructor
Shape::~Shape() {
nshapes--;
}
// Circle area
double Circle::area() const {
return M_PI*radius*radius;
}
// Circle perimeter
double Circle::perimeter() const {
return 2*M_PI*radius;
}
// Square area
double Square::area() const {
return width*width;
}
// Square perimeter
double Square::perimeter() const {
return 4*width;
}
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