[Dev-C++] get

Hello, I am new to C++.
I am following a tutorial in wich it appears the following code (wich makes
a copy of a file):

	#include <iostream.h>
	#include <fstream.h>
	#include <process.h>

	void main()
	{
	ifstream infile;
	ofstream outfile;
	char filename[20];

	   cout << "Enter the desired file to copy ----> ";
	   cin >> filename;
	   infile.open(filename, ios::nocreate);
	   if (!infile) {
     		cout << "Input file cannot be opened.\n";
	      exit(1);
	   }
	   outfile.open("copy");
	   if (!outfile) {
	      cout << "Output file cannot be opened.\n";
	      exit(1);
	   }
	   char one_char;
  	   while (infile.get(one_char)) {
      	outfile.put(one_char);
	      cout.put(one_char);
	   }
	   infile.close();
	   outfile.close();
	}

It should create a copy of the original file into the file "COPY". The
program compiles and runs properly but the file COPY is empty (it exists but
has 0 bytes), what is wrong?

thanks. Esteban