APCSA Practice: What Does This Java While Loop Sum? 💻

📢 What is the output of the following code?

java
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int sum = 0;
int x = 2;
while (x less than= 8) {
sum += x;
x += 2;
}
System.out.println(sum);
Options:
A) 20
B) 30
C) 40
D) 18

📝 Solution Breakdown:
1️⃣ The variable sum is initialized to 0.
2️⃣ The while loop starts with x = 2 and increments x by 2 each time.
3️⃣ On each iteration, x is added to sum.

After the first iteration, sum = 0 + 2 = 2.

After the second iteration, sum = 2 + 4 = 6.

After the third iteration, sum = 6 + 6 = 12.

After the fourth iteration, sum = 12 + 8 = 20.
4️⃣ The loop stops when x exceeds 8.
🔥 Final Answer: Option A — 20
🔑 Key Takeaway:
The loop sums the even numbers between 2 and 8, inclusive, and the final sum is 20.

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