Controlling loop execution Flashcards

What happens when a `break` statement is encountered inside a nested `for` loop?

Answer: It exits only the innermost loop

`break` only terminates the innermost loop in which it appears, not any enclosing loops.

What is the output of this code? ```python for i in range(5): if i == 3: continue print(i, end=' ') ```

Answer: 0 1 2 4

`continue` skips the iteration where `i == 3`, so 3 is not printed.

Which of the following correctly uses `break` inside a `while` loop?

Answer: while True: break

`break` is a statement used alone without parentheses or additional keywords.

What does the `else` clause of a `for` loop execute?

Answer: Only when the loop completes without hitting a `break`

The `else` clause runs after the loop finishes normally, but is skipped if a `break` exits the loop.

What is the output of: ```python for i in range(3): pass print(i) ```

Answer: 2

The loop variable `i` retains its last value after the loop ends, which is 2 for `range(3)`.

How does `continue` differ from `break` inside a loop?

Answer: `continue` skips to the next iteration; `break` exits the loop

`continue` moves to the next iteration while `break` terminates the entire loop.

What is the result of this code? ```python x = 10 while x > 0: x -= 3 if x == 4: break print(x) ```

Answer: 4

x goes 10→7→4, at which point the `break` fires and the loop exits with x == 4.