Java quiz 27: Multiple variables in a loop

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Java quiz 27: Multiple variables in a loop

Level: Normal

What is the output of the following code?

public class MyLoop
{
  public static void main(String args[])
  {
    int x;
    int y;
    for(x = 0, y = 3; x < y; x += 2, y++)
    {
      System.out.print("");
    }
    System.out.print(x + "," + y);
  }
}
Author: Sar Maroof

Select the correct answer.

Answer explanation

  1. The statement for(x = 0, y = 3; x < y; x += 2, y++) indicates that the initial value of x = 0 and y = 3. As long as x is smaller than y the body of the loop is executed.
  2. x is smaller than y therefore, the body of the loop is exectued, the value of x is equal to x = x + 2 = 2, y = y + 1 = 3 + 1 = 4.
  3. By the next exectuion the value of x = x + 2 = 2 + 2 = 4, and y = y + 1 = 4 + 1 = 5.
  4. By the next execution the value of x = x + 2 = 4 + 2 = 6, and y = y + 1 = 5 + 1 = 6.
  5. Now, the the execution of the loop is terminated because y is no longer greater than x.
    The correct answer is: d.





Sar Maroof is a professional software development teacher, gives master classes and publishes technical articles. He is also an expert software developer and worked for several big as well as small companies and later as a freelancer.

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