Question

The expression expr -9 % 2 evaluates to:
A) 0
B) 1
C) -1

Answer 1

C) -1

The expression -9 % 2 evaluates to -1 because the modulus operation returns the remainder of the division, and in most programming contexts the result matches the sign of the numerator.

Step-by-step explanation:

The modulus operator, sometimes also called the remainder operator or integer remainder operator works on integers (and integer expressions) and yields the remainder when the first operand is divided by the second.

The expression -9 % 2 evaluates to C) -1. The modulus operator (%) returns the remainder of the division of two numbers. When -9 is divided by 2, the quotient is -4 with a remainder of -1. In most programming languages, the sign of the result of the modulus operation matches the sign of the numerator, hence, -9 % 2 is -1.