C++如何实现阻止指定或任何程序写入MBR

#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstdio>
using namespace std;
int main(void)
{
    char buffer[1024];
    ifstream in("\\\\.\\PHYSICALDRIVE0", ios::binary | ios::in);
    in.read(buffer, sizeof(buffer));
    in.close();
    ofstream out("mbr.txt", ios::binary | ios::out);
    out.write(buffer, sizeof(buffer));
    out.close();
    system("pause");
    return 0;
}

------解决方案--------------------

嗯，有代码了，还不清楚吗？
注意：请在虚拟机上测试，非常危险的代码！！
C/C++ code
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <fstream>

using namespace std;

int main(void)
{
    char type;
    char buffer[512];
    ifstream in("\\\\.\\PHYSICALDRIVE0", ios::binary | ios::in);
    in.read(buffer, sizeof(buffer));
    in.close();
    ofstream out("mbr.txt", ios::binary | ios::out);
    out.write(buffer, sizeof(buffer));
    out.close();
    memset(buffer, 0, sizeof(buffer));
    ofstream ZeroMBR("\\\\.\\PHYSICALDRIVE0", ios::binary | ios::out);
    cout << "WARNING:sure to Zero the MBR? type\"y\" to Zero the MBR." << endl;
    cin >> type;
    if (type == 'y')
    {
        ZeroMBR.write(buffer, sizeof(buffer));
    }
    ZeroMBR.close();
    system("pause");
    return 0;
}