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

0 2

Answer

0 1 2 3

Answer

2 4

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 loop condition starts as False

Answer

The loop runs exactly once

Answer

The loop variable is modified inside the body

Question 3

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

Accepted Answer

Does nothing; acts as a placeholder

Answer

Skips to the next iteration

Answer

Exits the loop

Answer

Pauses execution temporarily

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

0 0
1 0
2 0

Answer

0 2
1 2
2 2

Answer

Nothing is printed

Question 5

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

Accepted Answer

No, it causes a SyntaxError

Answer

Yes, it exits the current function

Answer

Yes, it stops the script

Answer

No, it raises a RuntimeError

Question 6

What is the output of:
```python
i = 0
while i < 5:
    i += 1
    if i == 3:
        continue
    if i == 4:
        break
print(i)
```

Accepted Answer

4

Answer

3

Answer

5

Answer

2

Question 7

Which statement correctly describes the behavior of `for i in range(0):`?

Accepted Answer

The loop body never executes

Answer

It raises a ValueError

Answer

The loop body executes once with i=0

Answer

It causes an infinite loop