subject_30614.htm

一些关于vc的问答

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序号：30614 发表者：天花乱坠 发表日期：2003-02-25 09:29:33
<br>主题：这样给unsigned char负值对么？
<br>内容：int ParkNo=1;<BR>int ParkFlag=0;<BR>int iYear,iMonth,iDay,iHour,iMin,iSecond;<BR><BR>unsigned char *data;<BR>//memset(data,0,16);<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[0]='T';<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[1]=ParkNo%256;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[2]=ParkNo/256;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[3]=ParkFlag;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[4]=iYear-2000;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[5]=iMonth;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[6]=iDay;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[7]=iHour;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[8]=iMin;<BR>&nbsp;&nbsp;&nbsp;&nbsp;data[9]=iSecond;<BR><BR>然后我就想用这个data，结果出错：（<BR><BR>2003-2-25 9:34:15