Core Java · interview question
Identify the flaw in this code that calculates an order total with tax, where 'taxRate' is 0.1?
Multiple choiceHardchapter-1-curatedpremiumcore-javacode-reading-and-debugging
double orderTotal = 100;
double taxRate = 0.1;
orderTotal = orderTotal + taxRate;Answer and explanation
Correct answer
D. The total doesn't include the tax correctly.
Why
The calculation is flawed because 'orderTotal' should be multiplied by (1 + taxRate) to correctly add the tax. The current code attempts to add tax directly, which is incorrect.
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