WhyOhGodWhy

gistfile1.txt

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WhyOhGodWhy
{
    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Struct)]
    public class InfoAttribute : Attribute
    {
        public InfoAttribute(string author, long date = 0)
        {
            Name = author;
            Version = 0;
            Date = new DateTime(date);
        }

        public string Name { get; private set; }

        public int Version { get; set; }

        public DateTime Date { get; private set; }

        public override string ToString()
        {
            string value = "Autorius : " + Name;
            if (Version != 0)
            {
                value += " Versija : " + Version.ToString();
                value += " Data : " + Date.ToString();
            }
            return value;
        }
    }

    abstract class Figura
    {
        protected string str;

        public override string ToString()
        {
            Type type = GetType();
            var attr = type.GetCustomAttributes(true).Select(a => a as InfoAttribute).Single(a => a != null);
            return String.Format("Figura : {0} {1}\r\nPlotas:{2}", type.Name, attr, str);
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Trikampis : Figura
    {
        public Trikampis(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            var b = Convert.ToInt32(split[2]);
            var c = Convert.ToInt32(split[3]);
            var p = a + b + c;
            str = Convert.ToString(Math.Sqrt(p * (p - a) * (p - b) * (p - c)));
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Kvadratas : Figura
    {
        public Kvadratas(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            str = Convert.ToString(a * a);
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Staciakampis : Figura
    {
        public Staciakampis(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            var b = Convert.ToInt32(split[2]);
            str = Convert.ToString(a * b);
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Apskritimas : Figura
    {
        public Apskritimas(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            str = Convert.ToString(Math.PI * a * a);
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Rombas : Figura
    {
        public Rombas(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            var b = Convert.ToInt32(split[2]);
            str = Convert.ToString(a * b / 2);
        }
    }

    [Info("Darius", 635459460465359526, Version = -5)]
    class Trapecija : Figura
    {
        public Trapecija(string input)
        {
            var split = input.Split(new char[] { ' ' });
            var a = Convert.ToInt32(split[1]);
            var b = Convert.ToInt32(split[2]);
            var c = Convert.ToInt32(split[3]);
            str = Convert.ToString((a + b) / 2 * c);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            var stuff = DoStuff(System.IO.File.ReadAllText("duom.txt"));
            foreach (var thing in stuff)
                Console.WriteLine(thing);
            Console.ReadLine();
        }

        static ArrayList DoStuff(string input)
        {
            var ret = new ArrayList();
            var lines = input.Split(new char[] { '\n' });
            foreach (var line in lines)
            {
                if(line.StartsWith("Trikampis"))
                    ret.Add(new Trikampis(line));
                if (line.StartsWith("Kvadratas"))
                    ret.Add(new Kvadratas(line));
                if (line.StartsWith("Staciakampis"))
                    ret.Add(new Staciakampis(line));
                if (line.StartsWith("Apskritimas"))
                    ret.Add(new Apskritimas(line));
                if (line.StartsWith("Rombas"))
                    ret.Add(new Rombas(line));
                if (line.StartsWith("Trapecija"))
                    ret.Add(new Trapecija(line));
            }
            return ret;
        }
    }
}