C# Review Week 1

Basic Input and Output

100

You want to print output (text) to the console and have the cursor move to the next line. You should use this.

Console.WriteLine("");

200

You want to read the user's input. You should use this...

Console.ReadLine();

300

You want to write output (text) to the console, but you want the cursor to remain on the same line. You would use this...

Console.Write();

400

You want to hide the ending information when you run your code. You can use this...

Hitting any key will reveal it though.

Console.ReadKey();

500

I want to store a user's entered name in a variable: string name; How should I capture their input and store it in this variable?

name = Console.ReadLine();

data types

100

Which data type is used to store multiple characters (text) such as a name or email

string

200

I want to store a user's entered age, but I don't plan on doing math with this data. Which data type should I use?

string

300

I want to store a user's entered age, but I plan on doing math with this number. What data type would be best?

int

400

I am going to store a user entered temperature in Fahrenheit. Which data type would be best?

double

500

I am storing a number that will have a decimal place. What data type could I use?

double

Converting Data Types

100

I am converting a string into an int. How can I do this?

Convert.ToInt32(Console.ReadLine());

200

I am going to Convert an entered string (text) into a double. How can I do this?

Convert.ToDouble(Console.ReadLine());

300

Fix the syntax.

Convert.ToDouble(Console.WriteLine());

should be Console.ReadLine() in the parentheses

400

Fix the syntax. (2 things are wrong)

Convert.ToInt31(Console.ReadLine()):

should be 32 instead of 31 and should end in semi-colon instead of a colon

500

string food = "pizza";

Convert.ToInt32(food);

What is wrong?

can't turn the text into a number.

variables

100

to create and utilize a variable in c#, you must do the following: ______ and ___________.

declare and initialize

200

string firstName;

This is an example of _______ a variable of string data type named firstName

declaring

300

string firstName = "John";

this is an example of declaring and _______ a variable.

initializing

400

string fruit = "banana";

fruit = "apple";

Console.WriteLine(fruit);

What is the output?

apple

500

a local variable should follow this naming convention...

such as myVariable

camel-case

potpourri

100

Single line comments are created with which special characters?

two forward slashes

//

200

The following special characters are used for what?

/*

*/

multi-line comments

300

I am going to ask the user to enter a whole number and store it as an integer. How can I better ensure that they enter a whole number?

prompt them in the output

(provide an example such as For example, 7)

400

I would like to create a new line without using a CWL. What escape sequence can I use?

\n for newline

500

What symbol denotes termination of a statement. 

semi-colon