[Solved] Identify the error in this Ruby code: counter = 0 until counter > 4 do puts counter counter = counter - 1 end | Ruby

Ruby - Loops and Iteration

Identify the error in this Ruby code:

counter = 0
until counter > 4 do
  puts counter
  counter = counter - 1
end

AThe <code>puts</code> statement is incorrect

BThe condition should be <code>counter < 4</code>

CMissing <code>end</code> keyword

DThe counter decreases causing an infinite loop

Step-by-Step Solution

Solution:

Step 1: Analyze loop condition and update
The loop runs until counter > 4 becomes true.
Step 2: Check counter update
Counter starts at 0 and is decremented each iteration (counter = counter - 1), so it moves away from the exit condition.
Step 3: Identify error
Since counter decreases, it will never become > 4, causing an infinite loop.
Final Answer:
The counter decreases causing an infinite loop -> Option D
Quick Check:
Counter must move towards exit condition to avoid infinite loop [OK]

Quick Trick: Ensure loop variable moves toward exit condition [OK]

Common Mistakes:

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