JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        int i = 10;
        do {
            System.out.print(i + " ");
            i++;
        } while (i < 5);
        System.out.println(i);
    }
}

10 11

Expecting 10: that is the while rule. A do-while checks its condition after the body, so the body runs once even though 10 < 5 is false.
Expecting an endless loop: do-while repeats while the condition is true, not until it becomes true, so it stops after the first check.

How would the output change if the do-while were replaced by a while with the same condition?
When does a do-while loop fit a task better than a while loop?

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JuniorTheoryCommon

What does the program print?

JAVA

public class Main {
    public static void main(String[] args) {
        int i = 10;
        do {
            System.out.print(i + " ");
            i++;
        } while (i < 5);
        System.out.println(i);
    }
}

10 11

Expecting 10: that is the while rule. A do-while checks its condition after the body, so the body runs once even though 10 < 5 is false.
Expecting an endless loop: do-while repeats while the condition is true, not until it becomes true, so it stops after the first check.

How would the output change if the do-while were replaced by a while with the same condition?
When does a do-while loop fit a task better than a while loop?

Back to questions Open topic in roadmap →Answer it yourself — Quiz