Question

问题，我试图在我的命令行中运行它。我在Windows上使用最新的ruby ......是我的电脑吗？语法错误，意外的t标识符是弹出的消息。

puts "Hello, what\'s your name?"
name = gets.chomp puts "Hello, " + name + "."

if name == 'Chris' puts "What a lovely name!"
if name == 'Joey' puts "Wow! That\'s an even better name than Chris"
gets

我搞砸了哪里？

Answer 1

看起来偏小的错误：

puts "Hello, what\'s your name?"
name = gets.chomp
puts "Hello, " + name + "."

puts "What a lovely name!" if name == 'Chris' 
puts "Wow! That\'s an even better name than Chris" if name == 'Joey' 
gets

Answer 2

代码遗失end。除非您使用test expression或body，否则then和:应该分开。

puts "Hello, what\'s your name?"
name = gets.chomp
puts "Hello, " + name + "." # This line should be separated from previous line.

if name == 'Chris'
  puts "What a lovely name!"
end # <----
if name == 'Joey'
  puts "Wow! That\'s an even better name than Chris"
end # <---
gets

Answer 3

if（ pun intent ）你想在一行上写这些

if name == 'Chris' puts "What a lovely name!"
if name == 'Joey' puts "Wow! That\'s an even better name than Chris"

这样做

puts "What a lovely name!" if name == 'Chris'
puts "Wow! That\'s an even better name than Chris" if name == 'Joey'

Answer 4

当单引号未用作字符串分隔符时，您不需要转义单引号。

您也可以使用if / else语句。

puts "Hello, what's your name?"
name = gets.chomp
puts 'Hello, ' + name + '.'

if name == 'Chris'
  puts 'What a lovely name!'
else name == 'Joey'
  puts "Wow! That's an even better name than Chris"
end
gets

更多内容与您的代码建议的内容，或许：

puts "Hello, what's your name?"
name = gets.chomp
puts 'Hello, ' + name + '.'

puts 'What a lovely name!' if name == 'Chris'
puts "Wow! That's an even better name than Chris" if name == 'Joey'
gets

同样，请注意我只使用双引号，我需要逃避撇号。

请注意，双引号字符串允许“字符串插值”也称为“变量插值”，如果要搜索它，但通常不需要使用它们。或许，风格可能另有决定。

我遇到了ruby的分支问题

4 个答案: