if (@Var++ < 10) { System.out.println (@Var + " Hello World!"); } else { System.out.println (@Var + " Hello Universe!"); } What is the result if the integer aVar is 9?

The correct answer is A. Hello World! Option A is correct because aVar++ is post-increment: it uses the current value (9) in the comparison before incrementing, so the condition evaluates as 9 < 10 → true, entering the if-block and printing 10 Hello World!. Option B is wrong because the else-block is never reached…

Using Operators and Decision Constructs

Question

if (@Var++ < 10) {
System.out.println (@Var + " Hello World!");
} else {
System.out.println (@Var + " Hello Universe!");
}
What is the result if the integer aVar is 9?

Options

AHello World!
BHello Universe!
CHello World
DCompilation fails.

How the community answered

(25 responses)

A
92% (23)
B
4% (1)
D
4% (1)

Explanation

Option A is correct because aVar++ is post-increment: it uses the current value (9) in the comparison before incrementing, so the condition evaluates as 9 < 10 → true, entering the if-block and printing 10 Hello World!. Option B is wrong because the else-block is never reached - the condition was satisfied. Option C is wrong because the output literally contains an exclamation mark (!), so Hello World without it doesn't match. Option D is wrong because the code is syntactically valid and compiles without errors.

Memory tip: Think of x++ as "use it, then boost it" - the old value does the comparison work, and only after that does the variable step up by 1.

Topics

#Post-increment operators#Boolean expressions#Conditional statements#Operator evaluation

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