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    Question

    In Java, what will be the output of the following code

    snippet? public class Test {     public static void main(String[] args) {         int x = 5;         x = x++ + ++x;         System.out.println(x);     }}
    A 10 Correct Answer Incorrect Answer
    B 12 Correct Answer Incorrect Answer
    C 11 Correct Answer Incorrect Answer
    D 13 Correct Answer Incorrect Answer
    E Compilation Error Correct Answer Incorrect Answer

    Solution

    The output of the program is 13 . This result can be analyzed by understanding how the post-increment (x++) and pre-increment (++x) operators work in Java.

    1. Initial value of x is 5 .
    2. In the expression x = x++ + ++x:
      • Post-increment (x++) : The value of x (5) is used first, and then it is incremented to 6.
      • Pre-increment (++x) : The value of x is incremented first (to 7), and then this incremented value is used in the expression.
    3. The expression becomes: x = 5 + 7, resulting in x = 13.
    The key takeaway is that in post-increment, the original value is used before incrementing, whereas in pre-increment, the value is incremented before being used. Java evaluates the entire expression in a well-defined order, resolving x++ first, followed by ++x. Explanation of Incorrect Options: A) 10 : This option assumes a misunderstanding of the increment operators. If both increments were ignored or misinterpreted, the sum would have been 10. However, this neglects how x++ and ++x are handled in Java. B) 12 : This value could be derived if someone miscalculates the increment order. For example, assuming only the pre-increment (++x) is added to the original value of x without considering the post-increment. C) 11 : This incorrect result might arise from mistakenly considering only the pre-increment effect or applying it inconsistently. E) Compilation Error : The code snippet is syntactically correct, so this is not applicable.

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