CODEWITHSUNDEEP
ruby
shawn barr
shawn barr

Reputation: 1

I can't figure out why I am getting error "can't convert nil into String"

puts 'Please enter your age '
age=gets.chomp
age=age.to_i

if  age >=18
division='in the adult '

elsif age >=12
division='in the junior '

elsif age >=5
division='in the novice '

else    
puts 'We are sorry, but you are ineligible to play in the league at this time.'

end
puts 'Congratulations! You are '+division+'league.'

sleep 5

The error I get is this:

We are sorry, but you are ineligible to play in the league at this time.
:18:in `+': can't convert nil into String (TypeError)
:18:in `<main>'

Upvotes: 0

Views: 86

Answers (3)

A human being
A human being

Reputation: 1220

This is because you're not initializing division, and it's thus set to nil.Initialize division like this:

division = 'in no'

Do that either in else block or before the first if.

Upvotes: 1

the Tin Man
the Tin Man

Reputation: 160551

Just to show how your code can be more Ruby-like:

print 'Please enter your age: '
age = gets.chomp.to_i

division = case 
          when age >= 18
            'adult'

          when age >= 12
            'junior'

          when age >=5
            'novice' 

          else    
            nil

          end

if division
  puts "Congratulations! You are in the #{ division } league."
else
  puts 'We are sorry, but you are ineligible to play in the league at this time.'
end

I'm sure it could be tighter, but this is how I'd do it. Also, because the code checks to see if division is set, it won't return the error you're seeing.

Upvotes: 0

Richard Brown
Richard Brown

Reputation: 11436

You're getting that message because division is nil. In the case that none of your conditions are met the 'We are sorry' message is displayed, but no value is assigned to the division variable.

You can get rid of it by doing:

puts 'Congratulations! You are '+division+'league.' unless division.nil?

Upvotes: 1

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