Understanding Output in Java Code
If the input is 5, what is the output?
int x; int z = 0;
x = scnr.nextint();
if (x > 9)
z = 3;
z = z + 1;
System.out.print(z)
A) 3
B) 0
C) 4
D) 1
Final answer:
The correct output, according to the provided code and the input of 5, should be 2, since the value of z is incremented after not meeting the condition x > 9.
Explanation:
The correct answer is option C. Given the code snippet, we start by setting z to 0. When the value of 5 is read as input for x, it does not satisfy the condition x > 9, so the first assignment inside the if-statement is skipped, leaving z at 0. Then, we proceed to increment z by 1 (z = z + 1), making the value of z become 1.
Finally, the value of z is printed, which is 1. However, the provided code contains a minor error as the increment of z should have been inside an else block to avoid confusion, but functionally, the increment occurs regardless due to the lack of an else statement. As a result, the correct output is 1+1, making the output 2, which is not among the provided options, suggesting either an error in the question or in the provided options.
If the code snippet was modified to include an else statement for z = z + 1 within the if block, what would be the correct output for input x = 5? With the modification of adding an else statement for z = z + 1 within the if block, the correct output for input x = 5 would be 2. This is because if the condition x > 9 is not met, the else block would execute the increment of z by 1, resulting in z being equal to 1. Therefore, the final output when printing z would be 1+1, which equals 2.