Visual C# Quiz - Chapter 5: Loops, Files, and Random Numbers

What does a while loop do?

• Does not execute any statements

• Repeats a statement until a Boolean expression is true

• Executes a statement only once

• Repeats a statement as long as a Boolean expression is true

What is the structure of a while loop?

• if (BooleanExpression) { statements }

• do { statements } while (BooleanExpression)

• for (Initialization; Test; Update) { statements }

• while (BooleanExpression) { statements }

What type of loop is a while loop considered?

• Pretest loop

• Counter loop

• Posttest loop

• Infinite loop

What happens if the condition of a while loop is false at the start?

• The loop will cause an error

• The loop will iterate indefinitely

• The loop will iterate at least once

• The loop will not iterate at all

What is an infinite loop?

• A loop that executes a fixed number of times

• A loop that never starts

• A loop that repeats until interrupted

• A loop that executes only once

What do the ++ and -- operators do?

• Multiply and divide a variable

• Reset a variable to zero

• Add and subtract a variable

• Increment and decrement a variable

What is the general format of a for loop?

• for (Initialization; Test; Update) { statements }

• while (BooleanExpression) { statements }

• do { statements } while (BooleanExpression)

• if (BooleanExpression) { statements }

What is the purpose of the StreamWriter class?

• To read data from a text file

• To write data to a text file

• To delete a file

• To create a new file

What does the OpenFileDialog control do?

• Deletes a file

• Creates a new file

• Displays a dialog box for opening files

• Displays a dialog box for saving files

Aiden is working on a project in .NET and needs to generate random numbers for his simulation. What is the purpose of the Random class in .NET?

• To sort numbers

• To display numbers

• To generate random numbers

• To store numbers in a file