Why does when without argument in Kotlin not require an argument, and how does it decide which branch to execute?

hard📝 Conceptual Q10 of 15

Kotlin - Control Flow as Expressions

Why does when without argument in Kotlin not require an argument, and how does it decide which branch to execute?

ABecause it requires a default argument passed implicitly

BBecause it compares a hidden variable automatically

CBecause it loops through all branches and executes all true ones

DBecause it evaluates boolean expressions and executes the first true branch

Step-by-Step Solution

Solution:

Step 1: Understand when without argument behavior
It works like an if-else chain evaluating boolean conditions.
Step 2: Explain branch execution
It executes only the first branch whose condition is true and skips others.
Final Answer:
Because it evaluates boolean expressions and executes the first true branch -> Option D
Quick Check:
when without argument = first true condition runs [OK]

Quick Trick: when without argument acts like if-else chain [OK]

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