Question

What is the value of z after this code executes? x = 5; y = x ; z = --y;

Answer 1

The value of z after the code executes is 4. The pre-decrement operation on y reduces its value by 1 before assigning it to z.

Step-by-step explanation:

The student's question asks about the value of z after executing a short sequence of code. The provided code is:

x = 5;
y = x;
z = --y;

To determine the value of z, we need to understand what each line of code does:

1. x = 5; assigns the value 5 to the variable x.
2. y = x; assigns the value of x (which is 5) to the variable y.
3. z = --y; is a pre-decrement operation on y. This means that y is decremented by 1 before its value is assigned to z. After this line, both y and z will hold the value 4.

Therefore, after this code executes, the value of z will be 4.