Question:

Consider the following code snippet:

int x = 5;
int y = 10;
int z = x++ + ++y - 7;

What is the final value of z after executing the above code? Provide a step-by-step explanation of the calculation.

Answer:

Let's break down the code and calculate the value of z step-by-step:

1. Initialize the variable x with a value of 5.

2. Increment the value of x by 1 using the post-increment operator (x++). Now x becomes 6.

3. Initialize the variable y with a value of 10.

4. Increment the value of y by 1 using the pre-increment operator (++y). Now y becomes 11.

5. Calculate x++ + ++y - 7:

   a. Substitute the values: 6 + 11 - 7. b. Compute the addition: 17 - 7. c. Compute the subtraction: 10.

Therefore, the final value of z after executing the code snippet is 10.

The value of x is now 6, and the value of y is now 11.