new_hash.rb

def update_product
	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(key, value)
			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 ][price].upcase = new_price
			puts product.inspect.upcase
		end
	end
end
	
	
case choice

when 1
	add_product
end
	
when 2
	update_product
end