📄 e4.3-1.rb
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#E4.3-1.rb
class Person
def initialize( name,age=18 )
@name = name
@age = age
@motherland = "China"
end
def talk
puts "my name is "+@name+", age is "+@age.to_s
if @motherland == "China"
puts "I\'m Chinese."
else
puts "I\'m foreigner."
end
end
attr_writer :motherland
end
p1=Person.new("kaichuan",20)
p1.talk
p2=Person.new("Ben")
p2.motherland="ABC"
p2.talk
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