Which of the following is the correct syntax to define a recursive function named countdown in Bash?

easy📝 Syntax Q12 of 15

Bash Scripting - Functions

Which of the following is the correct syntax to define a recursive function named countdown in Bash?

Acountdown() { while [ $1 -gt 0 ]; do echo $1; (( $1-- )); done; echo Done; }

Bdef countdown(n): if n <= 0: print('Done') else: print(n) countdown(n-1)

Cfunction countdown() { if [[ $1 -le 0 ]]; then echo Done; else echo $1; countdown $(( $1 - 1 )); fi }

Dfunction countdown { echo $1; countdown $(( $1 - 1 )); }

Step-by-Step Solution

Solution:

Step 1: Identify Bash function syntax
Bash functions use the syntax: function name() { commands; } or name() { commands; }.
Step 2: Check recursive call and base case
function countdown() { if [[ $1 -le 0 ]]; then echo Done; else echo $1; countdown $(( $1 - 1 )); fi } correctly defines a function with a base case (if $1 <= 0) and recursive call countdown $(( $1 - 1 )).
Final Answer:
function countdown() { if [[ $1 -le 0 ]]; then echo Done; else echo $1; countdown $(( $1 - 1 )); fi } -> Option C
Quick Check:
Bash recursion syntax = function countdown() { if [[ $1 -le 0 ]]; then echo Done; else echo $1; countdown $(( $1 - 1 )); fi } [OK]

Quick Trick: Look for Bash syntax with base case and recursive call [OK]

Common Mistakes:

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