implement a cat program in csharp

main.cs
using System;
using System.IO;

class CatProgram
{
    static void Main(string[] args)
    {
        if (args.Length == 0)
        {
            Console.WriteLine("Usage: cat <file1> [<file2> ...]");
            return;
        }

        foreach (string filename in args)
        {
            try
            {
                using (StreamReader reader = new StreamReader(filename))
                {
                    while (!reader.EndOfStream)
                    {
                        string line = reader.ReadLine();
                        Console.WriteLine(line);
                    }
                }
            }
            catch (FileNotFoundException)
            {
                Console.WriteLine($"File not found: {filename}");
            }
        }
    }
}
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