oop思想实现数字时钟

oop思想实现数字时钟

#include "stdafx.h"
#include <iostream>
using namespace std;
#include <time.h>
#include <iomanip>
#include <windows.h>


//初始化的数据来自系统 以后的逻辑运算及显示自实现


class Clock
{
public:
	Clock()
	{
		//取得现在的时间
		time_t t = time(NULL);
		struct tm ti = *localtime(&t);
		//struct tm * __CRTDECL localtime(const time_t * _Time)


		hour = ti.tm_hour;
		min = ti.tm_min;
		sec = ti.tm_sec;
	}

	void run()
	{
		while (1)
		{
			show();  //完成显示
			tick();  //完成数据更新
		}
	}

private:
	void show()
	{
		system("cls");  //刷新屏幕
		cout << setw(2) << setfill('0') << hour << ":";
		cout << setw(2) << setfill('0') << min << ":";
		cout << setw(2) << setfill('0') << sec;
	}

	/*void tick()
	{
	Sleep(1000);
	if (++sec == 60)
	{
	sec = 0;
	min++;
	if (++min == 60)
	{
	min = 0;
	hour++;
	if (++hour == 24)
	{
	hour = 0;
	}
	}
	}
	}*/

	void tick()
	{
		Sleep(1000); //Sleep的S要大写
		sec++;
		if (sec == 60)
		{
			sec = 0;
			min++;
		}
		if (min == 60)
		{
			min = 0;
			hour++;
		}
		if (hour == 24)
		{
			hour = 0;
		}
	}
	int hour;
	int min;
	int sec;
};


int _tmain(int argc, _TCHAR* argv[])
{
	Clock c;
	c.run();

	return 0;
}