e7.4-3.rb

来自「学习ruby比较好的入门教材,可以」· RB 代码 · 共 12 行

#E7.4-3.rb  
require "E7.4-1"
require "E7.4-2"

class Student < Person
  include Me
end

aStudent=Student.new
aStudent.talk
puts aStudent.sqrt(77,2)