File copier

Create a C# program that makes copies of both text and binary files. You can use FileStream to assign a buffer size of 512 Kb.

Input

Output

Solution

using System.IO;
public class FileCopier
{
    public static void Main(string[] args)
    {
        const int BUFFER_SIZE = 512 * 1024;
        byte[] data = new byte[BUFFER_SIZE];
 
        string inputFileName = "app.exe";
        string outputFileName = "app-copy.exe";
 
        using (FileStream inputFile = File.OpenRead(inputFileName))
        {
            using (FileStream outputFile = File.Create(outputFileName))
            {
                int amountRead;
                do
                {
                    amountRead = inputFile.Read(data, 0, BUFFER_SIZE);
                    outputFile.Write(data, 0, amountRead);
                }
                while (amountRead == BUFFER_SIZE);
            }
        }
    }
}