In Java, what does the % operator perform?

In Java, what does the % operator perform?

• A. Division
• B. Addition
• C. Modulo; returns the remainder after division.
• D. Subtraction

Answer: (C)

The % operator performs a modulo operation: it gives the remainder left over after dividing the left-hand value by the right-hand value. For example, 10 % 3 is 1 because 10 divided by 3 is 3 with a remainder of 1. Similarly, 9 % 3 is 0 since 9 is divisible by 3 exactly. In Java, the sign of the result follows the left operand, so 7 % -3 is 1 and -7 % 3 is -1, with -7 % -3 also being -1. The key idea is that this operator yields the remainder, not the decimal quotient.

The % operator performs a modulo operation: it gives the remainder left over after dividing the left-hand value by the right-hand value. For example, 10 % 3 is 1 because 10 divided by 3 is 3 with a remainder of 1. Similarly, 9 % 3 is 0 since 9 is divisible by 3 exactly.

In Java, the sign of the result follows the left operand, so 7 % -3 is 1 and -7 % 3 is -1, with -7 % -3 also being -1. The key idea is that this operator yields the remainder, not the decimal quotient.