#include <bits/stdc++.h>
using namespace std;

int main(void)
{
    ofstream out("myfile.txt", ios::trunc); //|ios::binary);

    int64_t n = 0xffeeddccbbaa0201;
    out.write(reinterpret_cast<char*>(&n), sizeof n) << "\n";
    
    // char c[]="This is sample text.";
    // out.write(c, 4).write("!\n", 2);

    return 0;
}