P87~P91

for.rb

@@ -0,0 +1,14 @@
+# 1から5までの合計を求める
+sum = 0
+for i in 1..5
+  sum = sum + i
+end
+print sum, "\n"
+# fromからtoまでの合計を求める
+from = 10
+to = 10
+sum = 0
+for i in from..to
+  sum = sum + i
+end
+print sum, "\n"

times.rb

@@ -0,0 +1,9 @@
+# encoding: UTF-8
+
+4.times do
+  print "いちめんのはな\n"
+end
+
+5.times {
+  print "いちめんの花\n"
+}

times2.rb

@@ -0,0 +1,5 @@
+#encoding: UTF-8
+
+5.times do |i|
+  print i,"回目の繰り返しです。\n"
+end

times3.rb

@@ -0,0 +1,5 @@
+#encoding: UTF-8
+
+5.times do |i|
+  print i+1, "回目の繰り返しです。\n"
+end