shape.h
Circle
*/
namespace G_Shape
{
class Circle
{
public:
double calculate_perimeter(double radius);
double calculate_area(double radius);
private:
double radius;
};
/*
Rectangle
*/
class Rectangle
{
public:
double calculate_perimeter(double width, double height);
double calculate_area(double width, double height);
private:
double width;
double height;
};
}
shape.cpp
using namespace G_Shape;
#define PI 3.14159
/*
Circle
*/
double Circle::calculate_perimeter(double radius)
{
return 2 * PI * radius;
}
double Circle::calculate_area(double radius)
{
return PI * radius * radius;
}
/*
Rectangle
*/
double Rectangle::calculate_perimeter(double width, double height)
{
return 2 * (width + height);
}
double Rectangle::calculate_area(double width, double height)
{
return width * height;
}
mainframe.cpp
#include "draw/shape.h"
using namespace std;
using namespace G_Shape;
int main()
{
//Circle
double radius;
cout<< "Please input radius of the circle:";
cin>>radius;
Circle c;
cout << "Circle Perimeter: " << c.calculate_perimeter(radius) <<endl;
cout << "Circle Area: " << c.calculate_area(radius) <<endl;
//Rectangle
double width, height;
cout<< "Please input width of the rectangle:";
cin>>width;
cout<< "Please input height of the rectangle:";
cin>>height;
Rectangle r;
cout << "Rectangle Perimeter: " << r.calculate_perimeter(width, height) <<endl;
cout << "Rectangle Area: " << r.calculate_area(width, height) <<endl;
return 0;
}
运行结果:
david@ubuntu:~/MyProject/Hades$ ./mainframe.exe
Please input radius of the circle:5
Circle Perimeter: 31.4159
Circle Area: 78.5397
Please input width of the rectangle:4
Please input height of the rectangle:5
Rectangle Perimeter: 18
Rectangle Area: 20
原文链接: https://www.cnblogs.com/davidgu/archive/2012/06/28/2567801.html
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