转自网上资料：
http://www.maeee.cn/article/it/Cjj/850/show/2009072708274542.shtml
//获取系统的当前时间
int main()
{
time_t lTime;
// char timeBuf[128];
// _strtime(timeBuf);
// printf( "OS time://t//t//t//t%s//n", timeBuf);
// _strdate(timeBuf);
// printf( "OS date://t//t//t//t%s//n", timeBuf);
// return 0;
// .................
time(&lTime);
int iTime = lTime;
cout<<"the time is:"<<iTime<<endl;
cout<<ctime(&lTime)<<endl;
return 0;
}