iteration

Question 1

What is a loop?

Answer 1

A structure that repeats a block of code as long as a condition is met.

Question 2

Write a for loop from 1 to 100.

Answer 2

for (int k = 1; k <= 100; k++)
Console.WriteLine(k);

Question 3

Write a do…while loop from 1 to 100.

Answer 3

int k = 1;
do {
Console.WriteLine(k);
k++;
} while (k <= 100);

Question 4

What type of loop is guaranteed to run at least once?

Answer 4

do…while

Question 5

What is a nested loop?

Answer 5

A loop inside another loop.

Question 6

What happens if loop condition is always true?

Answer 6

Infinite loop.

Question 7

How to calculate sum of multiples of 3 from 1 to 10?

Answer 7

Use modulus: if (k % 3 == 0) sum += k;

Question 8

Correct the loop: for (int k = 0; k <= arr.Length; k++)

Answer 8

k < arr.Length

Question 9

How do you break out of a loop early?

Answer 9

Use break;

Question 10

How do you skip an iteration?

Answer 10

Use continue;