Help,I have trouble in writing a file into a buffer and anoter file!

There is a MIDI file "hello.mid"(Size : 1M).
I want to write the data of it to a buffer and anther file.

Code:

---

#include "stdafx.h"
#include "stdio.h"

using namespace std;

const int nSize = 2*1024;//Max size :2M

int _tmain(int argc, _TCHAR* argv[])
{
        FILE* pf, * pf1;
        int nLength = 0;
        unsigned char * pBuffer = new unsigned char[nSize];
        char* strPathName = "hello.mid";
   
        if((pf = fopen(strPathName,"r"))==NULL)
        {
                cout<<"Can't open file"<<endl;
                system("pause");
                return 0;
        }

//Write data into *pBuffer
 
        while(!feof(pf))
        {               
                fread(pBuffer,sizeof(unsigned char),1,pf);
                nLength++;
               
        }
       
              //Write data into anther file named "temp.mid":
          if((pf1 = fopen("temp.mid","w+"))==NULL)
        {
                cout<<"Can't write file"<<endl;
                system("pause");
                return 0;
        }
       
        unsigned char ch=fgetc(pf);
        while(!feof(pf)) 
        {
                fputc(ch,pf1);
                ch=fgetc(pf);
                    nLength++;
        }

        fclose(pf1); 
        fclose(pf);
       
        system("pause");
        return 0;
}

---

Problem:
1." Temp.mid"is lager than "hello.mid",in other words, "temp.mid" has
indescribable redundant data, why?
2. Why can't "temp.mid" be generated in this way :
fwrite(pBuffer,sizeof(unsigned char),nLength,pf1); ?

Thanks!

Midi are binary files and you're opening it as text. Read and write it binary.