ruby实现简易计算器

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回到家里，用的还是windows系统，ruby的编辑器换成了Aptana Studio 3

puts "Please input the first Number:"
number1=gets
puts "Please input a operator(+,-,*,/):"
op=gets
puts "pleasse input the second Number:"
number2=gets

case op.chomp
when "+"
result=number1.to_i + number2.to_i
when "-"
result=number1.to_i - number2.to_i
when "*"
result=number1.to_i * number2.to_i
when "/"
result=number1.to_i / number2.to_i
end
puts "Result:#{number1.chomp}#{op.chomp}#{number2.chomp}=#{result}"

运行一下：

$ ruby calculator.rb
Please input the first Number:
2
Please input a operator(+,-,*,/):
*
pleasse input the second Number:
8
Result:2*8=16