Quiz on WHILE Loop in Programming

What is the purpose of the `while` statement in programming?

• Execute a block of code only once

• Repeat a block of code a specified number of times

• Repeat a block of code while the condition is true

• Terminate the program

What is the syntax of the `while` loop in Python?

• while (condition) { statements }

• while: condition { statements }

• while condition:

• while = condition:

When does the `while` loop terminate?

• When memory runs out

• When the condition is false

• When the user inputs 0

• When the program crashes

What does the following code do? x = 1; while x < 5: print(x); x += 1

• Prints numbers from 0 to 5

• Prints numbers from 1 to 4

• Prints numbers from 1 to 5

• Infinite loop

Why is it necessary to increment the variable `x` in the `while` loop?

• To slow down the program

• To avoid infinite looping

• To print a character

• To check syntax

If the initial condition is `False` when using `while`, then:

• The loop will not execute at all

• The loop will still execute once

• A syntax error occurs

• The computer freezes

Choose the correct code to calculate the sum from 1 to 5:

• sum = 0; i = 1; while i < 6: sum += i; i += 1

• sum = 0; i = 1; while i <= 5: i += 1; sum += i

• sum = 0; i = 1; while i <= 5: sum += i

• sum = 0; i = 1; while i <= 5: sum += i; i += 1

What is the main function of `while`?

• Check input data from the keyboard

• Repeat an action while the condition is true

• Calculate an expression

• Output data to the screen

What is the role of the loop control variable?

• Used to set the title of the loop

• Has no role

• Determines how many times the loop executes

• Is the name of the program

In the following code, what is the final result of `count`? count = 0; i = 1; while i < 4: count += i; i += 1

• 6

• 3

• 10

• 4