Given the code fragment:
What is the output?
A. 8
B. 3
C. 0
D. A compilation error occurs.
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Given the code fragment:
What is the output?
A. 8
B. 3
C. 0
D. A compilation error occurs.
|
Download Printable PDF. VALID exam to help you PASS. |
|
The code may exhibit undefined behavior in Java due to the use of the post-increment operator in the expression a = a++ + ++a;. The order in which the operands of this expression are evaluated is not defined, so the result of the expression is not well-defined.
In addition, the expression a = a++ + ++a; modifies the value of a multiple times within the same expression, which can also lead to unexpected behavior.
It is important to avoid such code in production environments as it can be difficult to debug and can cause unexpected results.
It is an example of undefined behavior in Java because it modifies the same variable multiple times within a single expression without an intervening sequence point. This means that the order of operations is not well-defined and the result can vary depending on the compiler and runtime environment.
In some environments, the code may produce an output of 0, while in others it may produce a different result. It is generally recommended to avoid writing code that relies on undefined behavior.