4. Loops

do-while, break, continue

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Reading 1

Extra loop tools

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do { body } while (condition); runs the body first, then checks. Use it when the body should run at least once.

break leaves the nearest loop immediately. continue skips the rest of the current iteration and goes to the next check/step.

Prefer clear loop conditions when you can; use break and continue when they make the intent clearer.

int x;
do {
    cin >> x;
} while (x < 0);

for (int i = 1; i <= 5; i++) {
    if (i == 3) continue;
    cout << i << endl;
}

Check 2

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In a for loop, what does continue do?

Fill in 3

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Try it 4

Open

Notice 3 is skipped. Try skipping 2 and 4 instead.

main.cpp

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Program input (stdin)

Output will appear here.

Assignment 5

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Read integers until you find one that is a multiple of 7 (x % 7 == 0 and x != 0). Print that number and stop. There will always be one.

main.cpp

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