Question

我之前看到过这个答案，但是我在这里找不到丢失的END。这是一个用于学习的简单Ruby程序。我回去打字，完全按照他们的输入。仍然出现错误。终点在哪里？

puts "Welcome to 'Get My Number!'"
print "What's your name? "

input = gets

name = input.chomp

puts "Welcome, #{name}!"

# Store a random number for the player to guess.

puts "I've got a random number between 1 and 100."
puts "Can you guess it?"
target = rand(100) + 1

# Track how many guesses the player has made.

num_guesses = 0

# Track whether player has guessed correctly.

guessed_it = false

Until num_guesses == 10 || guessed_it

  puts "You've got #{10 - num_guesses} guesses left."
  print "Make a guess: "
  guess = gets.to_i

  num_guesses += 1

# Compare guess to target and print appropriate message.

  if guess < target
    puts "Oops. Your guess was LOW."
  elsif guess > target
    puts "Oops. Your guess was HIGH."
  elsif guess == target
    puts "Good job, #{name}!"
    puts "You guessed my number in #{num_guesses} guesses!"
    guessed_it = true
  end

 end

 #If the player didn't guess in time, show the target number.

 unless guessed_it
    puts "Sorry. You didn't get my number. (It was #{target}.)"

Answer 1

我认为问题出在if和elsif区块中。将其更改为case。此外，它更干净，更易于理解。

例如，以这种方式：

case 
when guess < target then puts "Oops. Your guess was LOW."
when guess > target then puts "Oops. Your guess was HIGH."
when guess == target then
   puts "Good job, #{name}!"
   puts "You guessed my number in #{num_guesses} guesses!"
   guessed_it = true
end

我希望它对您有用。

Answer 2

如汤姆·洛德（Tom Lord）所述，您在末尾缺少SELECT SUM(b.amount) FROM data GROUP BY a, c，而每个Sagar Pandya关键字end都应全部小写。您的申请全文如下。

Until

Ruby缺少结尾。还是多余的？

2 个答案: