PCEP Controlling loop execution 3

Question 1

What is the output of:
```python
for i in range(4):
    if i % 2 == 0:
        continue
    print(i)
```

Accepted Answer

1 3

Answer

`continue` skips even numbers, so only odd values 1 and 3 are printed.

Question 2

Which scenario would cause a `while` loop's `else` block to NOT execute?

Accepted Answer

A `break` statement exits the loop

Answer

The `else` block is skipped only when a `break` statement terminates the loop early.

Question 3

What does `pass` do when used inside a loop body?

Accepted Answer

Does nothing; acts as a placeholder

Answer

`pass` is a no-op statement used as a syntactic placeholder where a statement is required.

Question 4

What is printed by this code?
```python
for i in range(3):
    for j in range(3):
        if j == 1:
            break
    print(i, j)
```

Accepted Answer

0 1
1 1
2 1

Answer

The inner loop breaks when j==1, so j is 1 at that point; the outer loop prints i and j for each i.

Question 5

In Python, can `break` be used outside of a loop?

Accepted Answer

No, it causes a SyntaxError

Answer

Using `break` outside a loop results in a SyntaxError because it has no loop to break out of.

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