✏️ Explanatory Question

Convert the following segment into an equivalent do- while loop. 

int a, b;

for (a = 10, b = 20; b >= 10; b = b - 2) {
    a++;
}

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📘 Detailed Answer
🟢 Easy
← Previous Differentiate between the following code fragments and also give their output :- int f = 1, i = 2; while (++i < 5) f *= i; System.out.println(f); int f = 1, i = 2; do { f *= i; } while (++i < 5); System.out.println(f);
💡

Answer with Explanation


int a = 10, b = 20;

do {
    a++;
    b = b - 2;
} while (b >= 10);

Explanation:

Initialization: The initialization part a = 10, b = 20 is executed before the do-while loop.

Loop body: The statement a++ is executed inside the loop body.

Update: The decrement of b (b = b - 2) is moved inside the loop body, after a++.

Condition: The while (b >= 10) condition is checked at the end, ensuring it’s executed at least once, like the for loop.

Convert the following segment into an equivalent do- while loop. int a, b; for (a = 10, b = 20; b >= 10; b = b - 2) { a++; }
Visual aid for: Convert the following segment into an equivalent do- while loop. int a, b; for (a = 10, b = 20; b >= 10; b = b - 2) { a++; }
← Previous Differentiate between the following code fragments and also give their output :- int f = 1, i = 2; while (++i < 5) f *= i; System.out.println(f); int f = 1, i = 2; do { f *= i; } while (++i < 5); System.out.println(f);