C + + file copy, delete, rename __c++

I. Copying of documents

#include <iostream>
#include <fstream>
using namespace Std;

int CopyFile (char *sourcefile,char *newfile)
{
Ifstream in;
Ofstream out;
In.open (sourcefile,ios::binary);//Open source file
if (In.fail ())//Open source file failed
{
cout<< "Error 1:fail to open the source file." <<endl;
In.close ();
Out.close ();
return 0;
}
Out.open (newfile,ios::binary);//Create destination file
if (Out.fail ())//Create file failed
{
cout<< "Error 2:fail to create the new file." <<endl;
Out.close ();
In.close ();
return 0;
}
else//Copy Files
{
Out<<in.rdbuf ();
Out.close ();
In.close ();
return 1;
}
}
void Main ()
{
Char source[256],newfile[256];
cout<< "Please enter a file path to copy:" <<endl;
cin>>source;
cout<< "Please enter a new file path:" <<endl;
cin>>newfile;
if (CopyFile (source,newfile))
{
cout<< "File successfully copied ..." <<endl;
}
Else
{
cout<< "File copy failed ..." <<endl;
}
Cin.get ();
Cin.get ();
}

Ii. Deletion of documents

#include <iostream.h>
#include <windows.h>
#include <io.h>

void Main ()
{
Char source[256];//file path
cout<< "Please enter the file path to delete:" <<endl;
cin>>source;

/* _access (char *,int) to determine whether a file exists
There is a return of 0, there is no return-1.
_access (const char *path,int mode)
Value of Mode:
00 Is there
02 Write permission
04 Read permission
06 Read and Write permissions
*/
if (!_access (source,0))//If file exists: file is read-only cannot be deleted
{
Remove file read-only property
SetFileAttributes (source,0);
if (DeleteFile (source))//delete succeeded
{
cout<<source<< "was deleted successfully." <<endl;
}
else//cannot be deleted: file read-only or no permissions to perform deletion
{
cout<<source<< cannot be deleted: The file is read-only or has no delete permission. <<endl;
}
}
else//file does not exist
{
cout<<source<< "does not exist and cannot be deleted." <<endl;
}

Cin.get ();
}

Renaming of three files

#include <iostream.h>
#include <windows.h>
#include <io.h>

void Main ()
{
Char source[256];//file path
Char newname[256];
cout<< "Please enter the path to the file you want to rename:" <<endl;
cin>>source;
cout<< "Please enter a new name for the file:" <<endl;
cin>>newname;

if (!_access (source,0))//If file exists:
{
if (!rename (source,newname))//delete succeeded
{
cout<<source<< "successfully renamed to:" <<newname<<endl;
}
else//cannot be renamed: File open or no permission to perform renaming
{
The cout<< file could not be renamed (possibly for the following reasons): <<endl;
cout<< "T" << "1. "<<newname<< already exists" <<endl
<< "T" << "2. "<<newname<< is in use, not closed." <<endl
<< "T" << "3. "<<" You do not have permission to rename this file. " <<endl;
}
}
else//file does not exist
{
cout<<source<< "does not exist and cannot be renamed." <<endl;
}
Cin.get ();
}