circle.cpp

经常使用的一些源程序.包括一些模板.在VC++6.0下通过.

#include <iostream>
#include <iomanip>
using namespace std;
const double pi = 3.141592653589793;


/*main information*/
void info()
{
	cout << "circle, globe, cylinder";
	cout << "\n_______________________";
}

/*circle*/
class circle
{
public:
	circle(float r = 5, float xx = 0, float yy = 0, float zz = 0, float h = 10);
	void set(float, float, float, float, float);
	void show_circle();
	void show_globe();
	void show_cylinder();
	~circle();
private:
	float radius;
	float x;
	float y;
	float z;
	float height;
};

/**/
circle::circle(float r, float xx, float yy, float zz, float h)
{
	radius = r;
	x = xx;
	y = yy;
	z = zz;
	height = h;
}

/*set*/
void circle::set(float r = 5, float xx = 0, float yy = 0, float zz = 0, float h = 10)
{
	radius = r;
	x = xx;
	y = yy;
	z = zz;
	height = h;
}

/*show circle*/
void circle::show_circle()
{
	cout << "\ncircle";
	cout << "\nradius   : " << radius;
	cout << "\nposition : (" << x << ", " << y << ")";
	cout << "\nperimeter: " << 2 * pi * radius;
	cout << "\narea     : " << pi * radius * radius;
	cout << "\n_______________________";
}

/*show globe*/
void circle::show_globe()
{
	cout << "\nglobe";
	cout << "\nradius  : " << radius;
	cout << "\nposition: (" << x << ", " << y << ", " << z << ")";
	cout << "\narea    : " << pi * pi * radius * radius;
	cout << "\nvolume  : " << pi * pi * radius * radius * radius / 3;
	cout << "\n______________________";
}

/**/
void circle::show_cylinder()
{
	cout << "\ncylinder";
	cout << "\nradius  : " << radius;
	cout << "\nheight  : " << height;
	cout << "\nposition: (" << x << ", " << y << ", " << z << ")";
	cout << "\narea    : " << 2 * pi * radius * (radius + height);
	cout << "\nvolume  : " << pi * radius * radius * height;
	cout << "\n______________________";
}

/*~circle*/
circle::~circle(){cout << "\n~";}

/*source code*/
void test()
{
	circle xiao;
	xiao.set(1,1,1,1,3.4);
	xiao.show_circle();
}

/*information of source code owner*/
void end()
{
	cout << "\n\n______________\n";
	cout << "xiao zhiqiang\n";
	cout << "[e-mail]\n";
	cout << "Sep,2006";
	getchar();
}

/*the main code*/
void main()
{
	info();
	test();
	end();
}