Core Java · interview question
What will be the result of the following code when calculating the total cost with a discount?
Multiple choiceMediumchapter-1-curatedpremiumcore-javanumeric-types-and-money-basics
double price = 100.0;
double discount = 0.1;
double totalCost = price - (price * discount);Answer and explanation
Correct answer
D. 89.99999999999999
Why
Due to the way floating-point arithmetic works in Java, using double for money can result in precision issues, such as 89.99999999999999 instead of an exact value.
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