From 1 to 10 (do…while) · Java, before term starts

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Core exercise

Write compterJusqua10() that prints the numbers from 1 to 10, one per line, with a do…while loop.

Example · step-by-step trace · while versus do…while

Same condition, false from the start: the first loop never runs, the second runs once.

int k = 10;
while (k <= 5) {
    System.out.println("while : " + k);
    k++;
}
do {
    System.out.println("do    : " + k);
    k++;
} while (k <= 5);

ligne	variables	sortie	explication
1	k = 10		k is 10, so the condition k ≤ 5 is false from the start.
2	k = 10		Test on ENTERING the loop: 10 ≤ 5? No → the body is skipped entirely.
6	k = 10		The do…while, on the other hand, executes first and tests afterwards.
7	k = 10	`do : 10`	The body runs, without the condition ever having been true.
8	k = 11	`do : 10`	k becomes 11.
9	k = 11	`do : 10`	Test on EXIT: 11 ≤ 5? No → we stop, after one iteration.

A workshop goes here: you write and run code in it. It requires JavaScript.

Starting code

Exercices.java

public class Exercices {

    public static void main(String[] args) {
        compterJusqua10();
    }

    public static void compterJusqua10() {
        // TODO : do { ... } while ( ... );
    }
}

The core exercise is validated in the workshop, which requires JavaScript.

Hint 1

Here the condition is tested at the end: the body is therefore always executed at least once. Compare with the while of the previous exercise.