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79 lines
1.4 KiB
79 lines
1.4 KiB
#include "iostream"
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using namespace std;
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class Circle {
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public:
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Circle(int r);
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Circle();
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const double PI = 3.1415926;
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double getLength();
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double getArea();
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double getRadius();
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private:
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double radius = 0;
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};
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double Circle::getLength() {
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return radius * 2 * PI;
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}
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double Circle::getArea() {
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return radius * radius * PI;
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}
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double Circle::getRadius() {
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return radius;
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}
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Circle::Circle(int r) : radius(r) {}
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Circle::Circle() : radius(0) {}
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int main() {
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Circle circle(17);
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cout << "Area | Length | Radius" << endl;
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cout << circle.getArea() << endl << circle.getLength() << endl << circle.getRadius();
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}
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// --------------------------------------------------------------
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class Circle2 {
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public:
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const double PI = 3.1415926;
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void printArea();
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void printLength();
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void printRadius();
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Circle2(double radius) : radius(radius) {
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area = radius * radius * PI;
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length = radius * 2 * PI;
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}
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Circle2(const Circle2 &c2) {
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radius = c2.radius;
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length = c2.length;
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area = c2.area;
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}
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private:
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double radius = 0;
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double length = 0;
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double area = 0;
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};
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void Circle2::printArea() {
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cout << "Area: " << area << endl;
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}
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void Circle2::printLength() {
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cout << "Length: " << length << endl;
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}
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void Circle2::printRadius() {
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cout << "Radius: " << radius << endl;
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}
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