using System;
using System.IO;
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            StreamWriter file = new StreamWriter(@"C:\lr\text.txt");
            string text = Console.ReadLine();
            file.Write(text);
            file.Close();
        }
    }
}

using System.IO;
namespace ConsoleApp14
{
    class Program
    {
        static void Main(string[] args)
        {
            StreamWriter file = new StreamWriter(@"C:\lr\text.txt");


            DirectoryInfo dir = new DirectoryInfo(@"C:\lr\");

            file.WriteLine(dir);

            foreach (DirectoryInfo i in dir.GetDirectories())
            {
                file.WriteLine(i.Name);
                foreach (DirectoryInfo i2 in i.GetDirectories())
                {
                    file.WriteLine(i2.Name);
                    foreach (var f in i2.GetFiles())
                    {
                        file.WriteLine(f.Name);
                    }
                }
                foreach (var f in i.GetFiles())
                {
                    file.WriteLine(f.Name);
                }
            }
            foreach (var f in dir.GetFiles())
            {
                file.WriteLine(f.Name);
            }

            file.Close();
        }
    }
}


using System;
using System.IO;
using System.IO.Compression;
namespace ConsoleApp14
{
    class Program
    {
        static void Compress(string file1, string file2)
        {
            FileStream infile = new FileStream(file1, FileMode.Open);
            FileStream outfile = File.Create(file2);
            GZipStream comp = new GZipStream(outfile, CompressionMode.Compress);
            infile.CopyTo(comp);
            comp.Close();
            outfile.Close();
            infile.Close();

        }

        static void Decompress(string file1, string file2)
        {
            FileStream infile = new FileStream(file1, FileMode.Open);
            FileStream outfile = File.Create(file2);
            GZipStream decomp = new GZipStream(infile, CompressionMode.Decompress);
            decomp.CopyTo(outfile);

            decomp.Close();
            outfile.Close();
            infile.Close();
        }

        static void Main(string[] args)
        {
            Console.WriteLine("Введите файл для запаковки/распаковки и файл результата");
            string file1 = Console.ReadLine();
            string file2 = Console.ReadLine();
            string flag = Console.ReadLine();
            if (flag == "C")
            {

                Compress(file1, file2);
            }
            else if (flag == "D")
            {
                Decompress(file1, file2);
            }
        }
    }
}


using System;
using System.IO;
namespace ConsoleApp14
{
    class Program
    {
        static void Main(string[] args)
        {
            string podstr = Console.ReadLine();
            StreamWriter file = new StreamWriter(@"C:\lr\text.txt");
            DirectoryInfo dir = new DirectoryInfo(@"C:\lr\");
            foreach (var i in dir.GetFiles())
            {
                if (i.Name != "text.txt")
                {
                    StreamReader i2 = new StreamReader($@"C:\lr\{i.Name}");
                    string text;
                    int line = 0;


                    text = i2.ReadLine();
                    while (text != null)
                    {
                        line++;
                        if (text.Contains(podstr))
                        {
                            file.Write(i);
                            file.Write(" - ");
                            file.WriteLine(line);
                        }
                        text = i2.ReadLine();
                    }
                    i2.Close();
                }
            }
        file.Close();
        }
    }
}

using System;
using System.IO;
namespace ConsoleApp14
{
    class Program
    {
        static void Main(string[] args)
        {
            double[] alf = new double[27];
            for (int i=0; i<27; i++)
            {
                alf[i] = 0;
            }
            StreamWriter file = new StreamWriter(@"C:\lr\text.txt");
            StreamReader file2 = new StreamReader(@"C:\lr\kt\rgg.txt");
            string text = file2.ReadLine();
            Console.WriteLine(text);
            Console.Read();
            text = text.ToLower();
            int k = 0;
            for (int i = 0; i < text.Length; i++)
            {
                if ((int)text[i] >= 97 && (int)text[i] <= 122)
                {
                    alf[(int)text[i] - 97 +1]++;
                    k++;
                }
            }
            for (int i = 1; i < 27; i++)
            {

                if (alf[i]/k * 100 != 0)
                {
                    for (int j = 0; j < text.Length; j++)
                    {
                        if ((int)text[j] == (i + 96))
                        {
                            file.Write("" + text[j]);
                            break;
                        }
                    }
                    file.WriteLine(" - {0:0.00}%", alf[i]/k * 100);
                }
            }
            file.Close();
        }
    }
}



using System;
using System.IO;
namespace ConsoleApp14
{
    class Program
    {
        static void Main(string[] args)
        {
            string podstr = Console.ReadLine();
            StreamWriter file = new StreamWriter(@"C:\lr\text.txt");
            DirectoryInfo dir = new DirectoryInfo(@"C:\lr\");
            foreach (var i in dir.GetFiles())
            {
                if (i.Name != "text.txt")
                {
                    StreamReader i2 = new StreamReader($@"C:\lr\{i.Name}");
                    string text;
                    //int line = 0;
                    text = i2.ReadLine();
                    while (text != null)
                    {
                        //line++;
                        if (text.Contains(podstr))
                        {
                            file.Write(i);
                            file.WriteLine(" - содержится");
                            //file.WriteLine(line);
                        }
                        text = i2.ReadLine();
                    }
                    i2.Close();
                }
            }
            file.Close();
        }
    }
}