习题 24 更多练习

# ex24.rb

puts "Let's practice everything."
puts "You\'d need to know \'bout escapes with \\ that do \n newlines and \t tabs."

poem = <<END
\tThe lovely world
with logic so firmly planted
cannot discern \n the needs of love
nor comprehend passion from intuition
and requires an explanation
\n\t\twhere there is none.
END

puts "--------------------"
puts poem
puts "--------------------"

five = 10 - 2 + 3 - 6
puts "This should be five: #{five}"

def secret_formula(started)
    jelly_beans = started * 500
    jars = jelly_beans / 1000
    creates = jars / 100
    return jelly_beans, jars, creates
end

start_point = 10000
beans, jars, creates = secret_formula(start_point)

puts "With a starting point of: #{start_point}"
puts "We'd have #{beans} beans, #{jars} jars, and #{creates} creates."

结果：

$ ruby ex24.rb
Let's practice everything.
You'd need to know 'bout escapes with \ that do 
 newlines and    tabs.
--------------------
    The lovely world
with logic so firmly planted
cannot discern 
 the needs of love
nor comprehend passion from intuition
and requires an explanation

        where there is none.
--------------------
This should be five: 5
With a starting point of: 10000
We'd have 5000000 beans, 5000 jars, and 50 creates.