Question

Consider the following code segment.

int x = / initial value not shown /;
int y = / initial value not shown /;
int z = x;
z /= y;
z += 2;
Which of the following best describes the behavior of the code segment?
A. It sets z to 2
B. It sets z to x.
C. It sets z to (1 / y) + 2.
D. It sets z to (x / y) + 2.
E. It sets z to (x + 2) / y.

Answer 1

The code segment sets the value of the variable z to the result of dividing x by y and then adding 2, which can be mathematically represented as (x / y) + 2. So option (d) is correct.

Step-by-step explanation:

Let's analyze the code segment step by step:

int x = / initial value not shown /;: Initializes variable x with an unspecified value.

int y = / initial value not shown /;: Initializes variable y with an unspecified value.

int z = x;: Copies the value of x into z.

z /= y;: Divides z by y and assigns the result back to z. If y is zero, this would result in a division by zero error, but the initial value of y is not given.

z += 2;: Adds 2 to the current value of z.

Now, let's consider the possibilities:

If y is zero, the code results in undefined behavior due to division by zero.

If y is not zero, z will be updated to (x / y) + 2.

Therefore, the correct answer is It sets z to (x / y) + 2.

The code performs a division operation and then adds 2 to the result, assuming that the division by y is valid (i.e., y is not zero).