将图片写入二进制文件，再从二进制文件还原图片(c++)

 #include "string"

 #include "iostream"

 #include "fstream"

 using namespace std;

 #define MAX 20480

 void main()

 {

     string sPicPath = "E:\\10kb.jpg";

     string sSavePath = "E:\\Binary.bat";

     string sGetPic = "E:\\newpicture.png";

     ifstream fin(sPicPath.c_str(), ios::binary);

     if(!fin)

  {

         cout<<"can't open "<<sPicPath<<endl;

      return;

  }

  fin.seekg(,ios::end);//reset FilePtr Position as the end

  int ByteLen = fin.tellg();//get file length(bytes)

  cout<<"the file length : "<<ByteLen<<" Bytes"<<endl;

  fin.seekg(,ios::beg);//restore saved pos

     char pBuffer[MAX] = {};

     fin.read(pBuffer, sizeof(pBuffer));

     fin.close();

     ofstream fout(sSavePath.c_str(), ios::binary);

     if(!fout)

   return;

     fout.write(pBuffer,sizeof(pBuffer));

     fout.close();

     ifstream fins(sSavePath.c_str(), ios::binary);

  if(!fins)

  {

   cout<<"can't open "<<sSavePath<<endl;

   return;

  }

     memset(pBuffer,,sizeof(pBuffer));

     fins.read(pBuffer, sizeof(pBuffer));

     fins.close();

     ofstream fouts(sGetPic.c_str(), ios::binary);

     if(!fouts)

   return;

     fouts.write(pBuffer, sizeof(pBuffer));

  cout<<"new file path: "<<sGetPic<<endl;

     fouts.close();

 }

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