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Ruby Ruby Basics Conditionals A Better "check_speed" Method

Posted by K .
K .
2,357 Points

Why does it matter what order we put the 'if' and 'elsif' statements?

I have this code the error is saying it checks if speed is greater than 60 but doesn't print out "too fast" . why is that?

def check_speed(speed)
  if speed < 45
    puts "too slow"

  elsif speed >= 45
    puts "speed OK"

  elsif speed > 60
    puts "too fast"
  end

end

i know that if i rearrange the statements it works.. i just dont understand why.

def check_speed(speed)
  if speed > 60
    puts "too fast"

  elsif speed >= 45
    puts "speed OK"

  elsif speed < 45
    puts "too slow"
  end

end

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

The conditions are checked in order and the first one that is true executes. In your case:

elsif speed >= 45

meets the condition for speeds greater than 60 so that is what executes