#include<stdio.h>
#include<windows.h> //Sleep()函数的头文件int main(){ int a = 0,b = 0,c = 0; while(1){ for(a= 0;a < 24;a++ ){ for(b = 0;b < 60;b++){ for(c = 0;c < 60;c++){ Sleep(1000); //S必须是大写,睡眠1秒 printf("\r%02d:%02d:%02d",a,b,c); //输出时间 } } } } return 0;}#include<windows.h> //S