Hello World - C# Quiz Sheet

Match the following actions with their purposes in a C# program.

• Console.ReadLine();

• To write output to the console

• Console.Title = "Skynet";

• To read input from the user

• Console.WriteLine("Hello World");

• To change the text color

• Console.ForegroundColor = ConsoleColor.Red;

• To set the title of the console window

Which method is used to read a line of input from the console in C#?

• Console.WriteLine()

• Console.ReadLine()

• Console.ReadKey()

• Console.Write()

What does 'Console.ForegroundColor = ConsoleColor.Green;' do in the program?

• Sets the background color to green

• Sets the text color to green

• Sets the window height

• Sets the console title

In the code, what is the purpose of 'Console.WindowHeight = 40;'?

• To set the width of the console window

• To set the height of the console window

• To set the title of the console window

• To set the color of the console text

What is the output of 'Console.WriteLine("Hello, what's your name?");'?

• It reads the user's name

• It writes 'Hello, what's your name?' to the console

• It changes the console color

• It sets the console title

What is the function of 'Console.ReadKey();' in the program?

• To read a line of input

• To wait for a key press

• To write output to the console

• To change the text color

(a)   is a method in the C# program.

• Console.WindowHeight
• Console.ForegroundColor
• Console.ReadLine()
• Console.Title

What does the 'while(true)' loop do in the program?

• A) Executes the code inside it once

• B) Executes the code inside it indefinitely

• C) Stops the program

• D) Changes the console color

What is the effect of 'Console.ForegroundColor = ConsoleColor.Blue;' in the program?

• Changes the text color to blue

• Changes the background color to blue

• Changes the console title

• Changes the window height

The purpose of using 'using System;' at the beginning of the C# program is (a)  

• To include the System namespace
• To set the console title
• To change the text color
• To read input from the user