Control Flow in Programming: Interactive Quizzes for Year 1 Computing

Question 1

Which of these is NOT a structure used to control the flow of a program?

Accepted Answer

Addition

Answer

If-else statement

Answer

Loop

Answer

Switch statement

Question 2

What do we use an if-else statement for?

Accepted Answer

To run different code depending on whether a condition is true or false

Answer

To keep information in a variable

Answer

To run a set of instructions again and again

Answer

To make a choice

Question 3

What's the difference between a for loop and a while loop?

Accepted Answer

A for loop is used when we know how many times we want to run the instructions, while a while loop is used when we don't know

Answer

A while loop is used when we know how many times we want to run the instructions, while a for loop is used when we don't know

Answer

There is no difference between a for loop and a while loop

Answer

A for loop is used for counting, while a while loop is used for conditions

Question 4

Which of these is the correct way to write a while loop in Python?

Accepted Answer

while condition:

Answer

while condition then:

Answer

while condition {

Answer

while condition else:

Question 5

What do we use a switch statement for?

Accepted Answer

To run different code depending on the value of a variable

Answer

To keep information in a variable

Answer

To run a set of instructions again and again

Answer

To make a choice

Question 6

What is the main purpose of a switch statement?

Accepted Answer

To execute different code depending on the value of a variable

Answer

To repeat a code block a certain number of times

Answer

To evaluate a condition and execute code accordingly

Answer

To stop the execution of a program

Question 7

Which of these is **not** a benefit of using control structures?

Accepted Answer

Automated error fixing

Answer

Improved code readability

Answer

Increased program efficiency

Answer

Reduced code complexity

Question 8

What happens when we put one control structure inside another?

Accepted Answer

We are nesting control structures.

Answer

We are looping through control structures.

Answer

We are selecting different control structures.

Question 9

Which of the following is the correct syntax for an if-else statement in Python?

Accepted Answer

if condition: body else: body

Answer

if condition: body

Answer

if condition: body else body

Answer

if condition: body then body

Question 10

What is the main purpose of a loop?

Accepted Answer

To execute a block of code multiple times

Answer

To make decisions based on conditions

Answer

To store data

Answer

To control the flow of a program

Question 11

Which of these is **not** a type of loop in Python?

Accepted Answer

Until loop

Answer

While loop

Answer

For loop

Answer

Do-while loop

Question 12

What is the default case in a switch statement used for?

Accepted Answer

To execute code if none of the other cases match

Answer

To execute code before any of the other cases

Answer

To exit the switch statement

Answer

To loop through all the cases

Question 13

What is the purpose of a break statement in a loop?

Accepted Answer

To exit the loop immediately

Answer

To skip the current iteration of the loop

Answer

To continue the loop from the beginning

Answer

To execute the code after the loop

Question 14

Which control structure in programming allows execution of code only when a specific condition is satisfied?

Accepted Answer

If-else statement

Answer

Loop

Answer

Switch statement

Question 15

Which loop in programming continues executing code until a condition becomes false?

Accepted Answer

While loop

Answer

For loop

Answer

Do-while loop

Question 16

In a switch statement, which case will execute if the input is 'blue'?

Accepted Answer

Case 'blue':

Answer

Case 'red':

Answer

Case 'green':

Question 17

True or False: An if-else statement must have only one statement within its body.

Accepted Answer

False

Answer

True

Question 18

Which of the following can be used to exit a loop early?

Accepted Answer

Break statement

Answer

Continue statement

Answer

Return statement

Question 19

Which control structure is used to decide whether to execute a block of code?

Accepted Answer

If statement

Answer

Loop

Answer

Switch statement

Answer

Function

Question 20

Which control structure is used to repeat a set of instructions multiple times?

Accepted Answer

Loop

Answer

If statement

Answer

Switch statement

Answer

Function

Question 21

Which control structure is used to run different code depending on the value of an input?

Accepted Answer

Switch statement

Answer

If statement

Answer

Loop

Answer

Function

Question 22

Which keyword is used to end a switch statement block?

Accepted Answer

break

Answer

continue

Answer

end

Answer

finish

Question 23

What is the purpose of a 'break' statement in a loop?

Accepted Answer

To exit the loop immediately

Answer

To continue to the next iteration of the loop

Answer

To start a new loop

Answer

To pause the loop temporarily

Question 24

What is the difference between an 'if' statement and an 'if-else' statement?

Accepted Answer

An 'if' statement only executes code if the condition is true, while an 'if-else' statement always executes either the 'if' or 'else' block

Answer

An 'if-else' statement always executes the 'else' block

Answer

An 'if' statement can have multiple 'else' blocks

Answer

An 'if-else' statement cannot have an 'else' block

Question 25

Which control structure repeats a block of code until a specified condition is false?

Accepted Answer

Loop

Answer

If-else statement

Answer

Switch statement

Question 26

Which of the following is NOT a type of loop control structure?

Accepted Answer

Until loop

Answer

For loop

Answer

Do-while loop

Question 27

In a switch statement, the expression being evaluated is referred to as the:

Accepted Answer

Selector

Answer

Condition

Answer

Value

Question 28

True or False: The break statement can be used to interrupt the execution of a loop.

Accepted Answer

True

Answer

False

Question 29

Which of the following is a condition that will always evaluate to true?

Accepted Answer

True

Answer

1

Answer

0

Question 30

In Python, how can you write a loop that runs until the user enters a certain value?

Accepted Answer

while True:

Answer

for item in iterable:

Answer

if condition:

Question 31

You have a list of tasks that must be completed a set number of times. Which loop type is best suited for this scenario?

Accepted Answer

for loop

Answer

while loop

Answer

do-while loop

Question 32

A for loop is used when you want to:

Accepted Answer

Execute a set of instructions a specific number of times.

Answer

Execute a set of instructions until a condition is met.

Answer

Make a decision based on a user's input.

Answer

Terminate a program.

Question 33

The difference between a for loop and a while loop is that:

Accepted Answer

A for loop executes a set number of times, while a while loop executes until a condition is met.

Answer

A while loop executes a set number of times, while a for loop executes until a condition is met.

Answer

There is no difference between for loops and while loops.

Answer

For loops are used for looping through arrays, while while loops are used for looping through lists.

Question 34

The purpose of a continue statement within a loop is to:

Accepted Answer

Skip the current iteration of the loop and continue with the next one.

Answer

Stop the loop immediately.

Answer

Pause the execution of the loop.

Answer

Repeat the current iteration of the loop.

Question 35

A nested loop is a loop that:

Accepted Answer

Contains another loop within it.

Answer

Executes a set number of times.

Answer

Executes until a condition is met.

Answer

Repeats the same set of instructions multiple times.

Question 36

Which of the following Python statements is used to compare two values for equality?

Accepted Answer

if <variable> == <value>:

Answer

switch <variable>:

Answer

while <variable> == <value>:

Answer

for <variable> in <value>:

Question 37

Which loop structure in Python allows a block of code to be executed repeatedly until a certain condition is no longer met?

Accepted Answer

while <condition>:

Answer

for <item> in <sequence>:

Answer

switch <variable>:

Answer

if <condition>:

Question 38

What is the primary purpose of a 'break' statement within a loop?

Accepted Answer

To exit the loop immediately

Answer

To repeat the loop

Answer

To pause the execution of the loop

Answer

To ignore the current iteration of the loop

Question 39

What is the purpose of a 'continue' statement within a loop?

Accepted Answer

To skip the current iteration of the loop and proceed to the next

Answer

To repeat the loop

Answer

To exit the loop early

Question 40

Which operator is used in Python to compare if two values are not equal?

Accepted Answer

!=

Answer

=

Answer

>

Answer

<

Question 41

What is the function of an 'else' statement in Python?

Accepted Answer

To provide an alternative block of code to execute when the condition in an if statement is false

Answer

To repeat the code in an if statement

Answer

To execute code when the condition in an if statement is true

Question 42

Which of the following Python keywords is used to begin a while loop?

Accepted Answer

while

Answer

switch

Answer

if

Answer

for

Question 43

Which of these lets your program make a choice based on a condition?

Accepted Answer

if-else statement

Answer

array

Answer

function

Answer

loop

Question 44

What does a loop do?

Accepted Answer

Repeats a set of instructions over and over

Answer

Makes a decision

Answer

Stores information

Answer

Defines a set of instructions

Question 45

Which type of loop is best for going through a list of items?

Accepted Answer

For loop

Answer

Do-while loop

Answer

Loop until

Answer

While loop

Question 46

What's the key difference between a 'while' loop and a 'do-while' loop?

Accepted Answer

A 'do-while' loop always runs at least once, even if the condition is false.

Answer

A 'do-while' loop is faster than a 'while' loop.

Answer

A 'while' loop keeps going until the condition is true.

Question 47

In a loop, what does a 'break' do compared to a 'continue'?

Accepted Answer

A 'break' stops the loop completely, while a 'continue' skips the current step and moves to the next one.

Answer

A 'break' starts the loop, while a 'continue' stops the loop.

Question 48

What's the job of a 'control variable' in a loop?

Accepted Answer

It keeps track of which step in the loop is happening.

Answer

It sets the condition for when the loop stops.

Answer

It stores the results of the loop.

Answer

It decides how many times the loop will run.