41 lines
783 B
C++
41 lines
783 B
C++
/* File : example.h */
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class Shape {
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public:
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Shape() {
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nshapes++;
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}
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virtual ~Shape() {
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nshapes--;
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}
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double x, y;
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void move(double dx, double dy);
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virtual double area() = 0;
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virtual double perimeter() = 0;
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static int nshapes;
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};
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class Circle : public Shape {
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private:
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double radius;
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public:
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Circle(double r) : radius(r) { }
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Circle(double xx, double yy, double rr);
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virtual double area();
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virtual double perimeter();
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bool operator==(const Circle & other);
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bool operator!=(const Circle & other);
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};
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class Square : public Shape {
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private:
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double width;
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public:
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Square(double w) : width(w) { }
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virtual double area();
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virtual double perimeter();
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bool operator==(const Square & other);
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bool operator!=(const Square & other);
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};
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