Core Java · interview question
When recalculating a discount in a checkout system, what is a potential pitfall of reusing the same variable name within nested blocks?
Multiple choiceHardchapter-1-curatedpremiumcore-javascope-and-reassignment
Answer and explanation
Correct answer
C. The inner variable may overshadow the outer variable, leading to incorrect calculations.
Why
Reusing the same variable name in nested blocks can lead to overshadowing, where the inner variable hides the outer one. This can cause logical errors, as calculations may use the wrong variable.
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