control statements

What does the break statement do in a loop?

• Restarts the loop

• Skips the current step

• Exits the loop completely

• Makes the loop run forever

Answer explanation

The break statement is used in loops to exit the loop completely, terminating its execution. This means that when a break is encountered, the loop stops running, and control is transferred to the statement following the loop.

What does the continue statement do?

• Ends the loop

• Skips the rest of the loop and moves to next iteration

• Skips the rest of the loop and moves to next iteration

• Skips input

Answer explanation

The continue statement skips the rest of the current loop iteration and proceeds to the next iteration. This means any code after the continue statement within the loop will not execute for that iteration.

What will this code output?

for i in range(5):

if i == 3:

break

print(i)

• 0 1 2

• 0 1 2 3 4

• 1 2 3

• 0 1 2 3

Answer explanation

The loop iterates from 0 to 4. When i is 3, the 'break' statement exits the loop. Thus, only 0, 1, and 2 are printed before the loop is terminated. Therefore, the output is '0 1 2', making it the correct choice.

What is the output?

for i in range(5):

if i == 3:

continue

print(i)

• 0 1 2 3 4

• 1 2 3

• 0 1 2 4

• 0 1 2

Answer explanation

The loop iterates from 0 to 4. When i is 3, the 'continue' statement skips the print. Thus, the output is 0, 1, 2, and 4, making the correct answer '0 1 2 4'.

In a while loop, where is break used?

• Inside a condition

• Inside the loop block

• Outside the loop

• After loop ends

Answer explanation

The 'break' statement is used inside the loop block to exit the loop prematurely when a specific condition is met. This allows for more control over the loop's execution, making 'Inside the loop block' the correct choice.

What happens if break is not used?

• Loop stops

• Loop continues normally

• Syntax error

• System shuts down

Answer explanation

If 'break' is not used in a loop, the loop continues normally, executing all iterations until its condition is no longer met. This means the loop will run to completion unless interrupted by other means.

What does this print?

i = 0 while i < 5:

i += 1

if i == 3:

continue

print(i)

• 1 2 3 4 5

• 1 2 4 5
  

• 1 2 3 5

• 0 1 2 3

Answer explanation

The loop increments i from 0 to 5. When i equals 3, the 'continue' statement skips the print, so 3 is not printed. The output is 1, 2, 4, and 5, making '1 2 4 5' the correct answer.

What will break do in a for loop?

• Finish the loop

• Exit loop immediately

• Skip the loop

• Repeat the loop

Answer explanation

In a for loop, the 'break' statement will exit the loop immediately, stopping any further iterations. This is why the correct answer is 'Exit loop immediately'.

Output of this code?

for i in range(1, 6):

if i % 2 == 0:

continue

print(i)

• 1 2 3 4 5

• 1 3 5

• 2 4

• Error

Answer explanation

The code iterates from 1 to 5. It checks if 'i' is even; if so, it uses 'continue' to skip printing. Thus, only odd numbers (1, 3, 5) are printed, making the correct output '1 3 5'.

What does this program do?

while True:

user = input("Enter name (or 'stop' to quit): ")

if user == "stop":

break

• Takes one input only

• Takes inputs until 'stop' is entered

• Runs once

• Gives Error

Answer explanation

The program continuously prompts the user for input until 'stop' is entered. This means it takes inputs repeatedly, making 'Takes inputs until 'stop' is entered' the correct choice.