using System;

namespace PS2_Q3
{
	//
	// Problem Set 2, Question 3
	// A Histogram Maker
	// Written by Paul Hudak
	// September 22, 2006
	//
	class Class1
	{
		// 
		// Histogram Maker
		//
		[STAThread]
		static void Main(string[] args)
		{
			// initialize variables
			int x;
			int b0 = 0; int b1 = 0; int b2 = 0;
			int b3 = 0; int b4 = 0; int b5 = 0;
			int b6 = 0; int b7 = 0; int b8 = 0;
			int b9 = 0;

			// display welcome message
			Console.WriteLine("\nWelcome to the Histogram Maker!\n");

			// get numbers from user and place in proper bin
			x = GetNumber();
			while (x>=0)
			{
				if (x<=9) b0=b0+1;
				else if (x<=19) b1=b1+1;
				else if (x<=29) b2=b2+1;
				else if (x<=39) b3=b3+1;
				else if (x<=49) b4=b4+1;
				else if (x<=59) b5=b5+1;
				else if (x<=69) b6=b6+1;
				else if (x<=79) b7=b7+1;
				else if (x<=89) b8=b8+1;
				else if (x<=99) b9=b9+1;
				x = GetNumber();			
			}

			// Display histogram
			Console.WriteLine("\nHere is your Histogram:\n");
			DisplayLine(b0, 0); DisplayLine(b1,10); DisplayLine(b2,20); 
			DisplayLine(b3,30); DisplayLine(b4,40); DisplayLine(b5,50); 
			DisplayLine(b6,60); DisplayLine(b7,70); DisplayLine(b8,80); 
			DisplayLine(b9,90); 
			Console.WriteLine();
		}

		public static int GetNumber()
		{
			// get a single number from user
			Console.Write("Please type a number: ");
			int x = int.Parse(Console.ReadLine());

			// if the number is 100 or greater, ask for a different one
			while (x>99)
			{
				Console.Write("Number out of range; please try again: ");
				x = int.Parse(Console.ReadLine());
			}
			return x;
		}

		public static void DisplayLine(int num, int low)
		{
			// display bin range in a uniform field
			Console.Write("{0,2}-{1,2}: ", low, low+9);

			// write "num" asterisks
			while (num>0)
			{
				Console.Write("*");
				num=num-1;
			}

			// go to next line
			Console.WriteLine();
		}
	}
}