最近做个vc++程序,要将一个char数组的从第n位开始取到n+m位,然后赋给一个char数组,但是最后总是有乱码,经过查阅资料,是因为没有结尾的'\0'
字符串后面的部分内存内容存放的代码恰好是中文字符 所以就显示中文了。例如数组从第2位取到倒数第2位
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Code
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char *pbuf=new char[len_r-4];
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*(pbuf+len_r-4)='\0';
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Utility::CharArrayToCharArray(buf,pbuf,len_r);//将buf(0132323104)数据部分取出赋给pbuf(323231)
4![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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int iEnd=(len_r-4)/2+1;
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byte* Dbuf=new byte[iEnd];
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*(Dbuf+iEnd-1)=0;
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Utility::CharArrayToByteArray(pbuf,Dbuf,len_r-4); //将pbuf(323230)转化为Dbuf(220)
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bool Utility::CharArrayToCharArray(char * chArr,char * btArr,int chArrLen)
10![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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{
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int j=0;
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for(int i=2;i<chArrLen-2;i++)
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{
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*(btArr+j)=*(chArr+i);
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j++;
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}
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return true;
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}
20![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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bool Utility::CharArrayToByteArray(char *chArr,byte *btArr, int chArrLen)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
{
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for(int i=0;i+1<chArrLen;i+=2)//把返回的字符串转换成实际数据
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{
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byte iHi,iLo;
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iHi=HexCharToByte(*(chArr+i));
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iLo=HexCharToByte(*(chArr+i+1));
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if(iHi>15||iLo>15)
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return false;
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*(btArr+i/2)=iHi*16+iLo;
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}
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return true;
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}
其中buf为要转化的数组,len_r为其长度。
字符串后面的部分内存内容存放的代码恰好是中文字符 所以就显示中文了。例如数组从第2位取到倒数第2位
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif)
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![](https://www.cnblogs.com/Images/dot.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
其中buf为要转化的数组,len_r为其长度。