Thread: [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

Esteban,

Hi. If you remove 'ios::nocreate' from the line where you open infile, I
think you will find it works as planned, as follows:

    infile.open(filename);

Hope this helps!

Chris


----- Original Message -----
From: "Esteban Crespí de Valldaura" <ec...@re...>
To: <dev...@li...>
Sent: 30 October 2000 23:00
Subject: [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
>
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