using System;

using static System.Console;

using System.Globalization;

​

class GreenvilleRevenue

{

   static void Main()

    {

        const int ENTRANCE_FEE = 25;

        const int MIN_CONTESTANTS = 0;

        const int MAX_CONTESTANTS = 30;

        int numThisYear;

        // int numLastYear;

        int revenue;

        string[] names = new string[MAX_CONTESTANTS];

        char[] talents = new char[MAX_CONTESTANTS];

        char[] talentCodes = { 'S', 'D', 'M', 'O' };

        string[] talentCodesStrings = { "Singing", "Dancing", "Musical instrument", "Other" };

        int[] counts = { 0, 0, 0, 0 };

//        numLastYear = getContestantNumber("last", MIN_CONTESTANTS, MAX_CONTESTANTS);

        numThisYear = getContestantNumber("this", MIN_CONTESTANTS, MAX_CONTESTANTS);

        revenue = numThisYear * ENTRANCE_FEE;

        //WriteLine("Revenue expected this year is {0}", revenue.ToString("C", CultureInfo.GetCultureInfo("en-US")));

        //displayRelationship(numThisYear, numLastYear);

        getContestantData(numThisYear, names, talents, talentCodes, talentCodesStrings, counts);

        getLists(numThisYear, talentCodes, talentCodesStrings, names, talents, counts);

    }

​

    public static int getContestantNumber(string when, int min, int max)

    {

        string entryString;

        int num = max + 1;

        Write("Enter number of contestants {0} year >> ", when);

        entryString = ReadLine();

        while (num < min || num > max)

        {

            if (!int.TryParse(entryString, out num))

            {

                WriteLine("Format invalid");

                num = max + 1;

                Write("Enter number of contestants {0} year >> ", when);

                entryString = ReadLine();

            }

            else

            {

                if (num < min || num > max)

                {

                    WriteLine("Number must be between {0} and {1}", min, max);

                    num = max + 1;

                    Write("Enter number of contestants {0} year >> ", when);

                    entryString = ReadLine();

                }

            }

        }

        return num;

    }

    public static void displayRelationship(int numThisYear, int numLastYear)

    {

        if (numThisYear > 2 * numLastYear)

            WriteLine("The competition is more than twice as big this year!");

        else

           if (numThisYear > numLastYear)

            WriteLine("The competition is bigger than ever!");

        else

              if (numThisYear < numLastYear)

            WriteLine("A tighter race this year! Come out and cast your vote!");

    }

    public static void getContestantData(int numThisYear, string[] names, char[] talents, char[] talentCodes, string[] talentCodesStrings, int[] counts)

    {

        int x = 0;

        bool isValid;

        while (x < numThisYear)

        {

            Write("Enter contestant name >> ");

            names[x] = ReadLine();

            WriteLine("Talent codes are:");

            for (int y = 0; y < talentCodes.Length; ++y)

                WriteLine("  {0}   {1}", talentCodes[y], talentCodesStrings[y]);

            Write("       Enter talent code >> ");

            isValid = false;

            while (!isValid)

            {

                if (!char.TryParse(ReadLine(), out talents[x]))

                {

                    WriteLine("Invalid format - entry must be a single character");

                }

                else

                    for (int z = 0; z < talentCodes.Length; ++z)

                    {

                        if (talents[x] == talentCodes[z])

                        {

                            isValid = true;

                            ++counts[z];

                        }

                    }

                if (!isValid)

                {

                    WriteLine("That is not a valid code");

                    Write("       Enter talent code >> ");

                }

            }

            ++x;

        }

    }

    public static void getLists(int numThisYear, char[] talentCodes, string[] talentCodesStrings, string[] names, char[] talents, int[] counts)

    {

        int x;

        char QUIT = 'Z';

        char option;

        bool isValid;

        int pos = 0;

        bool found;

        WriteLine("\nThe types of talent are:");

        for (x = 0; x < counts.Length; ++x)

            WriteLine("{0, -20}  {1, 5}", talentCodesStrings[x], counts[x]);

        Write("\nEnter a talent type or {0} to quit >> ", QUIT);

        isValid = false;

        while (!isValid)

        {

            if (!char.TryParse(ReadLine(), out option))

            {

                isValid = false;

                WriteLine("Invalid format - entry must be a single character");

                Write("\nEnter a talent type or {0} to quit >> ", QUIT);

            }

            else

            {

                if (option == QUIT)

                    isValid = true;

                else

                {

                    for (int z = 0; z < talentCodes.Length; ++z)

                    {

                        if (option == talentCodes[z])

                        {

                            isValid = true;

                            pos = z;

                        }

                    }

                    if (!isValid)

                    {

                        WriteLine("{0} is not a valid code", option);

                        Write("\nEnter a talent type or {0} to quit >> ", QUIT);

                    }

                    else

                    {

                        WriteLine("\nContestants with talent {0} are:", talentCodesStrings[pos]);

                        found = false;

                        for (x = 0; x < numThisYear; ++x)

                        {

                            if (talents[x] == option)

                            {

                                WriteLine(names[x]);

                                found = true;

                            }

                        }

                        if (!found)

                            WriteLine("No contestants had talent {0}", talentCodesStrings[pos]);

                        isValid = false;

                        Write("\nEnter a talent type or {0} to quit >> ", QUIT);

                    }

                }

            }

        }

    }

}

​

public class Contestant

{

    public static char[] talentCodes = { 'S', 'D', 'M', 'O' };

    public static string[] talentStrings = { "Singing", "Dancing", "Musical instrument", "Other" };

​

    private string name;

    private double age;

    private string talent;

    private char talentCode;

    private double fee;

​

    public string Name

    {

        get { return name;  }

        set { this.name = value; }

    }

​

    public string Age

    {

        get { return Convert.ToString(age); }

        set { this.age = Convert.ToDouble(value); }

    }

​

    public string Talent

    {

        get { return talent; }

        set { this.talent = value; }

    }

​

    public char TalentCode

    {

        get { return talentCode; }

        set

        {

          bool validTalentCode = false;

​

          while (!validTalentCode)

          {

            for (int i = 0; i < Contestant.talentCodes.Length; ++i)

            {

              if (value == Contestant.talentCodes[i])

              {

                validTalentCode = true;

                this.talentCode = value;

                this.Talent = Contestant.talentStrings[i];

              }

            }

            if (!validTalentCode)

            {

              this.talentCode = Convert.ToChar("I");

              break;

            }

          }

        }

    }

​

    public double Fee

    {

        get { return fee; }

        set { this.fee = value; }

    }

}

​

public class ChildContestant : Contestant

{

    public ChildContestant()

    {

        this.Fee = 15;

    }

    public ChildContestant(string name, char talentCode, double age)

    {

        this.Name = name;

        this.TalentCode = talentCode;

        this.Age = Convert.ToString(age);

        this.Fee = 15;

    }

​

    public override string ToString()

    {

        return ("Child Contestant " + Name + " " + TalentCode.ToString() + "   Fee " + Fee.ToString("C", CultureInfo.GetCultureInfo("en-US")));

    }

​

}

​

public class TeenContestant : Contestant

{

    public TeenContestant()

    {

        this.Fee = 20;

    }

​

    public TeenContestant(string name, char talentCode, double age)

    {

        this.Name = name;

        this.TalentCode = talentCode;

        this.Age = Convert.ToString(age);

        this.Fee = 20;

    }

​

    public override string ToString()

    {

        return ("Teen Contestant "+ Name + " " + TalentCode.ToString() + "   Fee " + Fee.ToString("C", CultureInfo.GetCultureInfo("en-US")));

    }

​

}

​

public class AdultContestant : Contestant

{

    public AdultContestant()

    {

        this.Fee = 30;

    }

​

    public AdultContestant(string name, char talentCode, double age)

    {

        this.Name = name;

        this.TalentCode = talentCode;

        this.Age = Convert.ToString(age);

        this.Fee = 30;

    }

​

    public override string ToString()

    {

        return ("Adult Contestant " + Name + " " + TalentCode.ToString() + "   Fee " + Fee.ToString("C", CultureInfo.GetCultureInfo("en-US")));

    }

​

}

​