Question

我正在尝试在提示中设置一个非常简单的骰子滚动和响应，但它无法正常工作。我希望循环继续询问，直到用户输入roll，Roll或ROLL。

def roll()
  x = rand(5) + 1
  y = rand(5) + 1
  z = rand(5) + 1
  puts "You rolled #{x},#{y},#{z}"
  if x == y && y == z
    puts "TRIPS! Trip #{x}s"
  elsif x == y || y == z || x == z
    puts "Pair!"
  else
    if x > y && x > z
      puts "#{x} high"
    end
    if y > x && y > z
      puts "#{z} high"
    end
    if z > x && z > y
      puts "#{z} high"
    end
  end
end

puts "Type 'roll' when you're ready."
entry = gets.chomp

until entry == roll || Roll || ROLL
  puts "Type 'roll' when you're ready."
  entry = gets.chomp
end

roll()

Answer 1

# Remove these two lines and just use them in the while / until
# puts "Type 'roll' when you're ready"
# entry = gets.chomp


entry = ''
# Use String.downcase on entry because the user could type rOLL or RoLl
while entry.downcase != 'roll' # or you can use until entry.downcase == 'roll'
  puts "Type 'roll' when you're ready."
  entry = gets.chomp
end

您正在将条目与不存在的值进行比较。你需要比较一个字符串。

按照惯例，

滚动应该是某种类/模型/对象。例如

class Roll
   # create roll
   def initialize()
   end
end
roll = Roll.new
# or for an existing class like Arrays
array = Array.new

按惯例，

ROLL 将是先前定义的常量。

ROLL = 7
# => 7
ROLL = 4
# => warning: already initialized constant ROLL

直到声明没有处理简单的代码

1 个答案: