diff --git a/shop.csv b/shop.csv
new file mode 100644
index 0000000..2e71146
--- /dev/null
+++ b/shop.csv
@@ -0,0 +1,4 @@
+item,money
+melon,300
+mikan,150
+watermelon,200
diff --git a/shop.rb b/shop.rb
new file mode 100755
index 0000000..40ebf38
--- /dev/null
+++ b/shop.rb
@@ -0,0 +1,14 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+require 'csv'
+item = CSV.read("shop.csv", :headers => true)
+
+puts "何買う?"
+n = 0
+item.each{|a|
+  printf("%s\n",n += 1,a["item"])
+}
+x = gets.to_i
+printf "%d円\n",shop.csv[x]['money']
+