Question 1

Is it bad practice to change the counter inside a for loop?

Accepted Answer

Usually, yes. It makes the loop unpredictable and hard to read. If you need dynamic increments, a while loop is conceptually cleaner.

Question 2

What does i++ do?

Accepted Answer

It is the post-increment operator. It increases the value of the variable i by exactly 1.

Question 3

How do I make a loop step backwards?

Accepted Answer

Initialize the loop variable at the highest index (like array.length - 1), set the condition to i >= 0, and use i-- to decrement.

Question 4

Can a loop counter increment by more than 1?

Accepted Answer

Yes. You can use i += 2 to skip every other element, or any mathematical operation like i *= 2 for exponential leaps.

Is it bad practice to change the counter inside a for loop?

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