Which of the following is the correct way to write a while loop in Ruby that prints numbers from 1 to 3?

easy📝 Syntax Q3 of 15

Ruby - Loops and Iteration

Which of the following is the correct way to write a while loop in Ruby that prints numbers from 1 to 3?

<pre>i = 1
while i <= 3 do
  puts i
  i++
end</pre>

<pre>while i <= 3
  puts i
  i += 1
end
  i = 1</pre>

<pre>i = 1
while (i <= 3) {
  puts i
  i += 1
}</pre>

<pre>i = 1
while i <= 3
  puts i
  i += 1
end</pre>

Step-by-Step Solution

Solution:

Step 1: Initialize the loop variable
Set i = 1 before the loop starts.
Step 2: Use correct Ruby while syntax
Ruby uses while condition do ... end or while condition ... end without braces.
Step 3: Increment the loop variable properly
Use i += 1 to increment; i++ is invalid in Ruby.

i = 1 while i <= 3 puts i i += 1 end
is the correct syntax.

Quick Trick: Initialize before loop; use 'while condition do' and 'i += 1' [OK]

Common Mistakes:

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