C语言入门代码库,模拟显示数字时钟

#include<stdio.h>int hour, minute, second;void Update()			//时钟函数
{second++;if (second == 60)	//秒{second = 0;minute++;}if (minute == 60)	//分钟{minute = 0;hour++;}if (hour == 0)		//小时{hour = 0;}
}void Display()			//显示函数
{printf("%2d:%2d:%2d\r", hour, minute, second);
}void Delay()			//延时函数
{int t;for (t = 0; t < 100000000; t++);		//for循环空语句实现延时
}int main(void)
{int i;hour = minute = second = 0;				//时钟初始化for (i = 0; i < 1000000; i++){Update();	//更新时分秒Display();	//显示时分秒Delay();	//延迟时间一秒}return 0;
}