diff --git "a/\043\043kaimonoo.rb\043\043" "b/\043\043kaimonoo.rb\043\043"
new file mode 100644
index 0000000..0519ecb
--- /dev/null
+++ "b/\043\043kaimonoo.rb\043\043"
@@ -0,0 +1 @@
+ 
\ No newline at end of file
diff --git "a/\043hello15.rb\043" "b/\043hello15.rb\043"
new file mode 100755
index 0000000..c910a64
--- /dev/null
+++ "b/\043hello15.rb\043"
@@ -0,0 +1,51 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+require 'csv'
+
+
+items = {}
+CSV.foreach("item.csv", headers: true) do |row|
+  items[row["name"]] = row["price"].to_i
+end
+
+
+cart {}
+total = 0
+
+
+puts "買い物プログラム"
+puts "商品リスト:"
+item.each { |name, price| puts "  #{name} : #{price}円" }
+puts "買いたい商品を入力してください(endで終了) "
+
+loop do
+  print "商品名:  "
+  name = gets.chomp
+  break if name.downcase == "end"
+
+
+  if items.key?(name)
+    print "数量: "
+    quantity = gets.chomp.to_i
+    price = items[name]
+    item_total = price * quantity
+    cart << {name: name, price: price, quantity: quantity, subtotal: item_total}
+    total += item_total
+
+
+    puts "#{name} * #{quantity} = #{item_total}円 を追加しました。"
+    puts "現在の合計 #{total} 円"
+    puts "11----------------------------"
+  else
+    puts "その商品はリストにありません。"
+  end
+end
+
+
+puts "\n   お会計     "
+cart.each do |item|
+  puts "#{item[:name]} {#{item[:price]"円") * #{item[quantity]}"個)" = #{item[:subtotal]}"円")
+end
+
+puts "合計金額: #{total} "円"
diff --git "a/\043hello16.rb\043" "b/\043hello16.rb\043"
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ "b/\043hello16.rb\043"
diff --git "a/\043hello18.rb\043" "b/\043hello18.rb\043"
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ "b/\043hello18.rb\043"
diff --git "a/\043kaimono\043" "b/\043kaimono\043"
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ "b/\043kaimono\043"
diff --git "a/\043kaimonoo.rb\043" "b/\043kaimonoo.rb\043"
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ "b/\043kaimonoo.rb\043"
diff --git "a/.\043\043kaimonoo.rb\043" "b/.\043\043kaimonoo.rb\043"
new file mode 120000
index 0000000..3d9dd78
--- /dev/null
+++ "b/.\043\043kaimonoo.rb\043"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.1164:1755790718
\ No newline at end of file
diff --git "a/.\043hello14.rb" "b/.\043hello14.rb"
deleted file mode 120000
index 23e6d39..0000000
--- "a/.\043hello14.rb"
+++ /dev/null
@@ -1 +0,0 @@
-j2523@jd.koeki-u.ac.jp.1494:1754743980
\ No newline at end of file
diff --git "a/.\043hello15.rb" "b/.\043hello15.rb"
new file mode 120000
index 0000000..1a7ffa1
--- /dev/null
+++ "b/.\043hello15.rb"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.1032:1755790718
\ No newline at end of file
diff --git "a/.\043hello16.rb" "b/.\043hello16.rb"
new file mode 120000
index 0000000..157a3f1
--- /dev/null
+++ "b/.\043hello16.rb"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.996:1755703645
\ No newline at end of file
diff --git "a/.\043hello18.rb" "b/.\043hello18.rb"
new file mode 120000
index 0000000..157a3f1
--- /dev/null
+++ "b/.\043hello18.rb"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.996:1755703645
\ No newline at end of file
diff --git "a/.\043kaimono" "b/.\043kaimono"
new file mode 120000
index 0000000..1a7ffa1
--- /dev/null
+++ "b/.\043kaimono"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.1032:1755790718
\ No newline at end of file
diff --git "a/.\043require \047csv\047.rb" "b/.\043require \047csv\047.rb"
new file mode 120000
index 0000000..3d9dd78
--- /dev/null
+++ "b/.\043require \047csv\047.rb"
@@ -0,0 +1 @@
+j2523@jd.koeki-u.ac.jp.1164:1755790718
\ No newline at end of file
diff --git a/hello15.rb b/hello15.rb
index 38c0a38..c910a64 100755
--- a/hello15.rb
+++ b/hello15.rb
@@ -1,15 +1,51 @@
 #!/usr/bin/env ruby
 # -*- coding: utf-8 -*-
 
-def aka
-  "\e[31m%s\n"
+require 'csv'
+
+
+items = {}
+CSV.foreach("item.csv", headers: true) do |row|
+  items[row["name"]] = row["price"].to_i
 end
 
-puts"Enter"
-a = gets.chomp
-printf(aka ,a + "------------------------------")
-printf(aka ,a + "------------------------------")
-printf(aka ,a + "------------------------------")
-printf(aka ,a + "------------------------------")
-printf(aka ,a + "------------------------------")
-printf(aka ,a + "------------------------------")
+
+cart {}
+total = 0
+
+
+puts "買い物プログラム"
+puts "商品リスト:"
+item.each { |name, price| puts "  #{name} : #{price}円" }
+puts "買いたい商品を入力してください(endで終了) "
+
+loop do
+  print "商品名:  "
+  name = gets.chomp
+  break if name.downcase == "end"
+
+
+  if items.key?(name)
+    print "数量: "
+    quantity = gets.chomp.to_i
+    price = items[name]
+    item_total = price * quantity
+    cart << {name: name, price: price, quantity: quantity, subtotal: item_total}
+    total += item_total
+
+
+    puts "#{name} * #{quantity} = #{item_total}円 を追加しました。"
+    puts "現在の合計 #{total} 円"
+    puts "11----------------------------"
+  else
+    puts "その商品はリストにありません。"
+  end
+end
+
+
+puts "\n   お会計     "
+cart.each do |item|
+  puts "#{item[:name]} {#{item[:price]"円") * #{item[quantity]}"個)" = #{item[:subtotal]}"円")
+end
+
+puts "合計金額: #{total} "円"
diff --git a/items.csv b/items.csv
new file mode 100644
index 0000000..f1e573b
--- /dev/null
+++ b/items.csv
@@ -0,0 +1,8 @@
+name,price
+りんご,100
+バナナ,80
+みかん,120
+アクエリアス,110
+株式会社よっちゃん,50000000
+ゴミ1t,-10000
+
diff --git a/require csv.rb b/require csv.rb
new file mode 100755
index 0000000..7cc3bc4
--- /dev/null
+++ b/require csv.rb
@@ -0,0 +1,50 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+require 'csv'
+
+# CSVファイルから商品リストを読み込み（Hash: { "商品名" => 単価 }）
+items = {}
+CSV.foreach("items.csv", headers: true) do |row|
+  items[row["name"]] = row["price"].to_i
+end
+
+cart = []
+total = 0
+
+puts "=== 買い物プログラム (CSV版) ==="
+puts "商品リスト:"
+items.each { |name, price| puts "  #{name} : #{price}円" }
+puts "買いたい商品を入力してください（endで終了）"
+
+loop do
+  print "商品名: "
+  name = gets&.strip
+  break if name.nil? || name.downcase == "end"
+
+  if items.key?(name)
+    print "数量: "
+    qty = Integer(gets&.strip || "0", exception: false) || 0
+    if qty <= 0
+      puts "数量は1以上で入力してください。"
+      next
+    end
+
+    price = items[name]
+    subtotal = price * qty
+    cart << { name: name, price: price, quantity: qty, subtotal: subtotal }
+    total += subtotal
+
+    puts "#{name} × #{qty} = #{subtotal}円 を追加しました。"
+    puts "現在の合計: #{total} 円"
+    puts "--------------------------"
+  else
+    puts "その商品はリストにありません。"
+  end
+end
+
+puts "\n=== お会計 ==="
+cart.each do |item|
+  puts "#{item[:name]} (#{item[:price]}円 × #{item[:quantity]}個) = #{item[:subtotal]}円"
+end
+puts "合計金額: #{total} 円"