Hash.rb

product = {827 => ["ARM",349.99], 
199 => ["LEG", 224.75], 
776 => ["FIRSTBORN",1499.95], 
222 => ["LIFESAVINGS",49.99], 
811 => ["RETIREMENT",49.99]}

choice = 0

if choice <= 7
	puts
	print "1. Add a product
2. Update a product
3. Delete a product
4. View all products
5. View names that start with a letter you choose
6. View highest-priced product and lowest-priced product
7. View sum of all product prices
8. Quit
Choose an option:  "
	$stdout.flush
	choice = gets.to_i

	if choice == 1
		while product.has_key?(key)
			key = rand(900) + 100
		end
		print "Enter a product name:  "
		$stdout.flush
		name = gets.chomp.upcase
		print "Enter the product price using a decimal (as in 44.99), with no dollar sign:  "
		$stdout.flush
		price = gets.chomp.to_f
		puts product[key] = ["#{name}", price]
		puts "You have entered a new product called #{name} with an assigned key of #{key}."
		puts product.inspect.upcase
	end
	
	if choice == 2
		product.each{ |key, value| 
			puts "#{key}  - #{value[0]},    #{value[1]}"
		}
		print "Enter the key number of the product you wish to update:  "
		$stdout.flush
		keynumber = gets.chomp.upcase	
		
		print "Enter 9 to change the product name, or 10 to change the price:  "
		$stdout.flush
		entry = gets.chomp.to_i
				
		if entry == 9
			if product.has_key?(keynumber)
				puts product[key, value]
				print "Enter the new product name:  "
				$stdout.flush
				new_name = gets.chomp.upcase
				puts new_name
				product.delete(keynumber)
				puts product.inspect.upcase
			elsif ! product.has_key?(keynumber) 
				print "This product is not in the list.\n"
			end
		end
		if entry == 10
			if product.has_value?(name)
				print "Enter the new product price:  "
				$stdout.flush
				new_price = gets.chomp.to_f
				product[ key ][1].upcase = new_price
				puts product.inspect.upcase
			end
		end
	end

	if choice == 3
		print "Enter the name of the product you want to delete:  "
		$stdout.flush
		name = gets.chomp.upcase
		findkey = product.index("name")
		product.delete(key)
		puts product.inspect.upcase
		if ! product.has_key?[name, price]
			print "This product is not in the list.\n"
		end
	end
	
	if choice == 4
		product.each{ |key, value| 
			puts "#{key}  -  #{value[0]},    #{value[1]}"
		}

	end
	
	if choice == 5
		print "Type a letter to display all the products starting with that letter:  "
		$stdout.flush
		letter = gets.chomp.upcase
		product.each do |key, value| 
		if value[0].slice(0,1) == letter
			puts "#{key}  -  #{value[0]},    #{value[1]}"
		end
	end
	
	if choice == 6
		product.each { |key, value| }
		low_price = product.sort.first
		position = product.index(value[1])
		product[value[position]]
		print "$#{low_price}"
		
		high_price = product.sort.last
		# position = product.index(value[1])
		product[key, value[1]]
		print "$#{high_price}"
	end
	
	if choice == 7
		sum = 0
		product.each { |key, value| } 
		puts "#{key[1]}"
		sum += [value[1]]
		print "The sum of all prices is #{sum}."
	end
	
	if choice == 8
		exit
	end
	
	if choice > 8
		puts "That\'s not one of the choices."
	end
end