C++实现电子时钟效果
本文实例为大家分享了C++实现电子时钟的具体代码，供大家参考，具体内容如下
此精确到秒，因为有精度误差加上从计算机获取初始时间时处理比较简单，因此运行一段时间会出现较大的误差。
代码可共享
#include<iostream>
#include<iomanip>
#include<Windows.h>
using namespace std;
class Clock
{
private:
int hour, minute, second;
int year, month, day,week;
public:
Clock() {};
void SetTime1(int _Hour, int _Mins, int _Sec){//初始时间函数
hour = _Hour;
minute = _Mins;
second = _Sec;
}
void SetTime2(int _year, int _month, int _day,int _week) {//初始时间函数
year = _year;
month = _month;
day = _day;
week = _week;
}
void ShowTime() {
cout << year << "year " << month << "month " << day << "day " << "weekday" << week << endl;
cout << setw(2) << setfill('0') << hour << ":" << setw(2) << setfill('0') << minute << ":" << setw(2) << setfill('0') << second << endl;
}//显示函数
void Count_time() {//计时函数
while (1)//24小时制
{
second += 1;
if (hour >= 24) {
hour -= 24;
Correct_time();//年月日纠错
week = week % 7 + 1;//星期变化
}
if (minute >= 60){
minute -= 60;
hour += 1;
}
if (second >= 60) {
second -= 60;
minute += 1;
}
system("cls");//清屏，清除所有显示的信息
ShowTime();
Sleep(1000);//一秒延迟
}
}
void Correct_time() {
int flag = 0;
if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0))
flag = 1;
if (month == 2) {
if ((flag == 1 && day == 29) || (flag == 0 && day == 28)) {
day = 1;
month += 1;
}
else
day += 1;
}
else {
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:if (day == 31) { month += 1, day = 1; }
else day += 1; break;
case 4:
case 6:
case 9:
case 11:if (day == 30) { month += 1, day = 1; }
else day += 1; break;
default:break;
}
}
}
};
int main()
{
Clock myClock; //定义时钟类对象
struct tm t; //tm结构指针
time_t now; //声明time_t类型变量
time(&now); //获取系统日期和时间
localtime_s(&t, &now); //获取当地日期和时间
myClock.SetTime2(t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,t.tm_wday);
myClock.SetTime1(t.tm_hour, t.tm_min, t.tm_sec);
myClock.ShowTime();
myClock.Count_time();
return 0;
}
执行效果
