CODEWITHSUNDEEP
rubycontrol-flow
code_t
code_t

Reputation: 49

code is not checking second elsif condition in ruby

My code is returning the 1st statement in control-flow

a = 6
b = 13
c = 4
if a == 2||4||5 && b == 9||10||11
puts "staement1"
elsif a == 6||7||8 && b == 12||13||14
puts "statement2"
elsif puts c
end

output is "statement1" but it should be "statement2". what is the issue ?

Upvotes: 1

Views: 66

Answers (2)

halfelf
halfelf

Reputation: 10107

Lets talk about a == 2 || 4 || 5.

It isn't equivalent to a == 2 || a == 4 || a == 5, but is evaluated in such order:

  1. a == 2 is false
  2. false || 4 is 4
  3. 4 || 5 is not evaluated and short circuited.

Therefore, a == 2 || 4 || 5's value is 4...

The same rule applies for b == 9||10||11 ... etc.

Upvotes: 2

Ursus
Ursus

Reputation: 30071

Your if is like

a = 6
b = 13
if (a == 2)||4||5 && (b == 9)||10||11

so in the end

4 && 10

and this is true because the only falsey values in ruby are nil and false itself

maybe what you want is something like

if [2, 4, 5].include?(a) && [9, 10, 11].include?(b)

Upvotes: 4

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