What is the purpose of control structures in programming?

• To perform calculations

• To manage the flow of execution in a program

• To store data

• To define objects

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

• Sequence

• Selection

• Iteration (Repetition)

• Encapsulation

What does the `if` statement do in a program?

• It repeats a block of code

• It checks a condition and executes code if the condition is true

• It declares a variable

• It stops the execution of the program

Which of the following is an example of a double-selection structure in C#?

• while loop

• if statement

• if...else statement

• do...while loop

What does the conditional operator `?:` do in C#?

• It repeats a statement multiple times

• It acts as a ternary operator that replaces simple if...else statements

• It terminates a loop

• It breaks the execution of a switch statement

What is a "counter-controlled repetition" structure?

• A loop where the number of iterations is known in advance

• A loop that runs indefinitely

• A loop that runs based on user input

• A structure used for function calls

Which of the following loops guarantees at least one execution of the loop body?

• while loop

• for loop

• do...while loop

• switch statement

What is the difference between a `while` loop and a `for` loop?

• A `while` loop is for selection, and a `for` loop is for repetition

• A `for` loop is more suitable for definite loops, while a `while` loop is used for indefinite loops

• A `for` loop executes only once, while a `while` loop repeats multiple times

• A `while` loop has an increment/decrement operator, while a `for` loop does not

Which of the following is an example of sentinel-controlled repetition?

• A loop that runs exactly 10 times

• A loop that continues until the user inputs -1

• A loop that increments by 1

• A loop controlled by a counter variable

What does the `break` statement do in a loop?

• It skips the current iteration and continues with the next

• It terminates the loop entirely

• It adds an extra iteration to the loop

• It restarts the loop