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

int main(){
fstream f;
fstream g;
f.open("hello.exe",ios::in|ios::binary);
g.open("copy_hello.exe",ios::out|ios::binary);
char *buffer=new char;;
while(!f.eof()){
    f.read(buffer,sizeof(char));
    g.write(buffer,sizeof(char));
}
return 0;
}