What will be the output of the following code: int i = 1, j = 10; do { if(i > j) { break; } j--; } while (++i < 5); System.out.println("i = " + i + " and j = " + j);

Question image

Understand the Problem

The question is asking for the output of a provided Java code snippet involving a do-while loop, conditionals, and variable manipulation. The user needs to analyze the code to determine the final values of the variables i and j when the program completes execution.

Answer

$i = 6$ and $j = 5$.
Answer for screen readers

The output of the program will be: $i = 6$ and $j = 5$.

Steps to Solve

  1. Initialize Variables Set the initial values: $i = 1$ and $j = 10$.

  2. First Iteration of the Loop The code enters the do-while loop. Since $i \leq j$, the break statement is not executed.

  • Decrement $j$: $j = j - 1 \Rightarrow j = 9$
  • Increment $i$: $i = i + 1 \Rightarrow i = 2$
  1. Second Iteration of the Loop The loop runs again with $i = 2$ and $j = 9$.
  • No break; continue to decrement $j$: $j = 8$
  • Increment $i$: $i = 3$
  1. Third Iteration of the Loop Now $i = 3$ and $j = 8$.
  • No break; decrement $j$: $j = 7$
  • Increment $i$: $i = 4$
  1. Fourth Iteration of the Loop With $i = 4$ and $j = 7$.
  • Still no break; decrement $j$: $j = 6$
  • Increment $i$: $i = 5$
  1. Fifth Iteration of the Loop The loop checks with $i = 5$ and $j = 6$.
  • The break is not reached yet. Decrement $j$: $j = 5$
  • Increment $i$: $i = 6$
  1. Exit Loop Now on the next check, $i = 6$ and $j = 5$.
  • Here, $i > j$, which triggers the break statement, exiting the loop.
  1. Final Output Finally, print the values of $i$ and $j$:
System.out.println("i = " + i + " and j = " + j);

The output of the program will be: $i = 6$ and $j = 5$.

More Information

This code demonstrates how a do-while loop executes its body before checking the condition, allowing for controlled manipulation of variables through updates, loops, and conditionals.

Tips

  • Misunderstanding the do-while loop, leading to incorrect assumptions about the order of operations.
  • Forgetting that the increment of $i$ occurs after the if condition, which can change the flow of the program unexpectedly.
Thank you for voting!
Use Quizgecko on...
Browser
Browser