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c++/Others/An Array of Pointers to Class.cpp

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+An Array of Pointers to Class
+This program is an example of using an array of pointers to a class.
+After declaring the array, you can allocate memory for each element using the new operator.
+To access a member variable or a method of an element, you can use the -> operator:
+
+#include <iostream>
+using namespace std;
+
+class CSquare
+{
+public:
+    double Side;
+
+    CSquare() : Side(0.00) {}
+    CSquare(double side) : Side(side) { }
+    ~CSquare() { }
+
+    double getSide() const { return Side; }
+    void setSide(const double s)
+    {
+	if( s <= 0 )
+		Side = 0.00;
+	else
+		Side = s;
+	}
+
+    double Perimeter() { return Side * 4; }
+    double Area() { return Side * Side; }
+};
+
+int main()
+{
+    CSquare *sqr[4];
+
+    sqr[0] = new CSquare;
+    sqr[0]->setSide(24.55);
+    sqr[1] = new CSquare;
+    sqr[1]->setSide(15.08);
+    sqr[2] = new CSquare;
+    sqr[2]->setSide(8.212);
+    sqr[3] = new CSquare;
+    sqr[3]->setSide(202.24);
+
+    cout << "Squares Characteristics" << endl;
+    cout << "Square 1" << endl;
+    cout << "Side:      " << sqr[0]->getSide() << endl;
+    cout << "Perimeter: " << sqr[0]->Perimeter() << endl;
+    cout << "Area:      " << sqr[0]->Area() << endl;
+
+    cout << "Square 2" << endl;
+    cout << "Side:      " << sqr[1]->getSide() << endl;
+    cout << "Perimeter: " << sqr[1]->Perimeter() << endl;
+    cout << "Area:      " << sqr[1]->Area() << endl;
+
+    cout << "Square 3" << endl;
+    cout << "Side:      " << sqr[2]->getSide() << endl;
+    cout << "Perimeter: " << sqr[2]->Perimeter() << endl;
+    cout << "Area:      " << sqr[2]->Area() << endl;
+	
+    cout << "Square 4" << endl;
+    cout << "Side:      " << sqr[3]->getSide() << endl;
+    cout << "Perimeter: " << sqr[3]->Perimeter() << endl;
+    cout << "Area:      " << sqr[3]->Area() << endl;
+
+    return 0;
+}