電腦開機時間的計算代碼

函數功能：GetTickCount返回（retrieve）從作業系統啟動到現在所經過（elapsed）的毫秒數，它的傳回值是DWORD.

知道了這個，這個程式也就不是什麼難事了。。。

CODE：

複製代碼 代碼如下:#include <stdlib.h>
#include <time.h>
#include <windows.h>
#include <stdio.h>

typedef struct node
{
int h;
int m;
int s;
}
*PTime;

void sleep(long wait);

void gettime();

int main()
{
PTime times;
int flag = 1;
char time[128];
do
{
_strtime(time); // Gets the current system time (do not include the date)
system("cls"); // clear screen
printf("OS time: %s\n",time);

gettime(times); // call gettime()
sleep(1000); // sleep 1 second

printf("已開機時間: %02d小時%02d分%02d秒\n", times->h, times->m, times->s);
}while(flag); // always cycle

return 0;
}

void sleep(long wait)
{
long goal; // define total time
goal = wait + clock();
while(goal > clock());
}

PTime gettime(PTime T)
{
int i = GetTickCount();
T->h = (i / 1000) / 3600;
T->m = (i / 1000) / 60 - T->h * 60;
T->s = (i / 1000) - T->h * 3600 - T->m * 60;
return T;
}