diff --git a/homework/week1_2.rb b/homework/week1_2.rb
new file mode 100644
index 0000000..a7b7b7d
--- /dev/null
+++ b/homework/week1_2.rb
@@ -0,0 +1,30 @@
+##Ruby讀書會作業 BMI 計算器 by四貓 
+
+puts "BMI 計算器"
+puts "你好，你叫什麼名字呢？"
+name =  gets.chomp
+puts "#{name}你好！我是殘酷的計算小精靈，要來幫你算 BMI 囉！"
+puts "請輸入你的身高（單位：公尺）"
+height= gets.chomp.to_f
+puts "請輸入你的體重（單位：公斤）" 
+weight = gets.chomp.to_f
+sum=height*height
+BMI=weight/sum
+puts "你的 BMI值是#{BMI}"
+
+if name == "阿銘"
+	puts "Jim說看到阿銘就要顯示過重"
+else 
+	
+	if BMI < 18.5
+    puts "紙片人！"
+	elsif 18.5 <= BMI && BMI < 24
+    puts "正常！保持下去吧！"
+	elsif 24 <= BMI && BMI < 27
+    puts "過重，要多運動囉！"
+	elsif BMI > 27
+    puts "連勝文？"
+	end
+
+end
+
diff --git a/homework/week1_2.rb~ b/homework/week1_2.rb~
new file mode 100644
index 0000000..e3a9aca
--- /dev/null
+++ b/homework/week1_2.rb~
@@ -0,0 +1,31 @@
+##Ruby讀書會作業 BMI 計算器 by四貓 
+
+puts "BMI 計算器"
+puts "你好，你叫什麼名字呢？"
+name =  gets.chomp
+puts "#{name}你好！我是殘酷的計算小精靈，要來幫你算 BMI 囉！"
+puts "請輸入你的身高（單位：公尺）"
+height= gets.chomp.to_f
+puts "請輸入你的體重（單位：公斤）" 
+weight = gets.chomp.to_f
+sum=height*height
+BMI=weight/sum
+puts "你的 BMI值是#{BMI}"
+
+if name == "阿銘"
+	puts "Jim說看到阿銘就要顯示過重"
+else 
+	
+	if  BMI<18.5
+                puts "紙片人！"
+	elsif  18.5<=BMI && BMI<24
+                puts "正常！保持下去吧！"
+	elsif  24<=BMI && BMI <27
+	puts "過重，要多運動囉！"
+	elsif BMI>27
+	puts "連勝文？"
+
+	end
+
+end
+
diff --git a/homework/week1_3.rb b/homework/week1_3.rb
new file mode 100644
index 0000000..81bb7af
--- /dev/null
+++ b/homework/week1_3.rb
@@ -0,0 +1,29 @@
+##Ruby讀書會作業 BMI 計算器 by四貓 
+
+puts "BMI 計算器"
+puts "你好，你叫什麼名字呢？"
+name =  gets.chomp
+puts "#{name}你好！我是殘酷的計算小精靈，要來幫你算 BMI 囉！"
+puts "請輸入你的身高（單位：公尺）"
+height = gets.chomp.to_f
+puts "請輸入你的體重（單位：公斤）" 
+weight = gets.chomp.to_f
+sum = height*height
+BMI = weight/sum
+
+if name == "阿銘"
+  puts "Jim說看到阿銘就要顯示過重"
+else 
+  puts "你的 BMI值是#{BMI}"	
+    if BMI < 18.5
+      puts "紙片人！"
+    elsif 18.5 <= BMI && BMI < 24
+      puts "正常！保持下去吧！"
+    elsif 24 <= BMI && BMI < 27
+      puts "過重，要多運動囉！"
+    elsif BMI > 27
+      puts "連勝文？"
+    end
+
+end
+