Mastering Pascal Control Structures

In Pascal, which control structure would you use to execute a block of code multiple times until a certain condition is met?

• If-Then-Else

• For Loop

• While Loop

• Case Statement

Consider the following Pascal code snippet: ```pascal var i: Integer; begin for i := 1 to 5 do writeln(i); end. ``` What will be the output of this code?

• 1 2 3 4 5

• 0 1 2 3 4

• 5 4 3 2 1

• 1 2 3 4

Which of the following is a correct way to handle errors in Pascal using exception handling?

• Try-Except

• If-Else

• Case-Of

• Repeat-Until

Analyze the following Pascal code and determine what it does: ```pascal var num: Integer; begin num := 10; while num > 0 do begin writeln(num); num := num - 2; end; end. ```

• Prints even numbers from 10 to 0

• Prints numbers from 10 to 1

• Prints odd numbers from 9 to 1

• Prints numbers from 10 to 2

In Pascal, how can you ensure that a block of code is executed at least once regardless of the condition?

• Use a For Loop

• Use a While Loop

• Use a Repeat-Until Loop

• Use an If-Then-Else Statement

Given the following Pascal code, identify the error handling technique used: ```pascal try // code that may raise an exception except on E: Exception do writeln('An error occurred: ', E.Message); end; ```

• Conditional Error Handling

• Exception Handling

• Loop Error Handling

• Sequential Error Handling

What is the purpose of the `else` clause in a Pascal `if-then-else` statement?

• To execute a block of code if the condition is true

• To execute a block of code if the condition is false

• To repeat a block of code

• To handle exceptions

Evaluate the following Pascal code and determine its output: ```pascal var x: Integer; begin x := 0; repeat writeln(x); x := x + 1; until x > 3; end. ```

• 0 1 2 3

• 1 2 3 4

• 0 1 2 3 4

• 1 2 3

Which control structure in Pascal allows you to choose between multiple options based on the value of a variable?

• If-Then-Else

• For Loop

• Case Statement

• While Loop

In the context of Pascal programming, what is the main advantage of using structured exception handling?

• It simplifies the code by removing all error checks

• It allows the program to continue running after an error

• It automatically corrects errors in the code

• It provides a way to handle errors gracefully and maintain program stability