Gets.chomp()用户输入错误

Question

这就是我的代码。这是不言而喻的。

print "How old are you? "
age = gets.chomp()
print "How tall are you?"
height = gets.chomp()
print "How much do you weigh?"
weight = gets.chomp()
puts "So, you're #{age} old, #{height} tall and #{weight} heavy."

我的代码输出如下。

$  C:/Ruby200/bin/ruby.exe ex11.rb
11
11
11
How old are you? How tall are you?How much do you weigh?So, you're 11 old, 11 tall and 11 heavy.

这可能是一个非常简单的错误，但如果您能指出这一点，我将不胜感激。

Answer 1

我认为你的问题是：“我所有的提示都是在所有输入之后一次打印出来的，这是怎么回事？”我有一个答案给你:)

print不会在字符串中添加换行符。并且STDOUT直到它有一个完整的行时才会刷新。简单的解决方法:用puts替换print (这会添加换行符)

puts "How old are you? "
age = gets.chomp()
puts "How tall are you?"
height = gets.chomp()
puts "How much do you weigh?"
weight = gets.chomp()
puts "So, you're #{age} old, #{height} tall and #{weight} heavy."