using System;

namespace PS5_Q1
{
	//
	// Problem Set 5, Question 1
	// A Histogram Maker (from PS2, Q3) Using Arrays
	// Written by Paul Hudak
	// October 16, 2006
	//
	class Class1
	{
		// 
		// Histogram Maker
		//
		[STAThread]
		static void Main(string[] args)
		{
			// initialize array
			// this can be done in three ways:
			// int[] bins = new int[10];            // this works b/c the default value is 0
			// int[] bins = {0,0,0,0,0,0,0,0,0,0};  // here we make the array elements explicit
			int[] bins = new int[10];				// here we use a loop to initialize the elements
			for (int i=0; i<10; i=i+1)
				bins[i] = 0;

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

			// get numbers from user and place in proper bin
			int x = GetNumber();
			while (x>=0)
			{
				int b = x/10;
				bins[b] = bins[b]+1;
				x = GetNumber();
			}

			// Display histogram
			Console.WriteLine("\nHere is your Histogram:\n");
			for (int i=0; i<10; i=i+1)
                DisplayLine(bins[i], 10*i);
			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();
		}
	}
}