1Z0-811 Primitives, Strings and Operators Practice Question
Given: int i = 1; int j = i++ + ++i; What is the value of j?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
4
The expression `i++ + ++i` is evaluated as follows: First, `i++` uses the current value of i (1) and then increments i to 2. Then, `++i` increments i from 2 to 3 and uses the new value (3). So, j = 1 + 3 = 4. Option A (3) incorrectly assumes both operations use the same initial value. Option B (5) incorrectly increments both times before using. Option C (2) incorrectly uses post-increment for both.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
3
Why it's wrong here
Incorrect evaluation of postfix and prefix.
- ✗
5
Why it's wrong here
Incorrect addition.
- ✗
2
Why it's wrong here
Missing the effect of both increments.
- ✓
4
Why this is correct
Correct: i++ = 1, i becomes 2; ++i = 3, i becomes 3; sum 4.
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