Question

在Ruby on Rails中，我如何编写代码来解决这个问题？ “编写一个程序，从用户那里获取两个数字，并显示2个数字的总和，差异，乘积和商数”

Answer 1

创建文件calc.rb

   class Calc
    def sum(a,b)
       a + b
    end

    def mul(a,b)
        a * b
    end

    def diff(a,b)
        a - b
    end

    def div(a,b)
        a / b
    end
end

puts "Enter A"
a = gets.chomp.to_i
puts "Enter B"
b = gets.chomp.to_i
obj = Calc.new
p "sum: #{obj.sum(a,b)}"
p "product: #{obj.mul(a,b)}"
p "quotient: #{obj.div(a,b)}"
p "difference: #{obj.diff(a,b)}"

在控制台中运行这个

ruby calc.rb

Enter A
4
Enter B
2
"sum: 6"
"product: 8"
"quotient: 2"
"difference: 2"

Ruby on Rails的总和，差异和产品？

1 个答案: