2.2.1 (d) Variables

In C#, which data type stores whole numbers from -2,147,483,648 to 2,147,483,647?

• int

• long

• float

• double

In C#, which data type stores whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807?

• int

• long

• float

• double

In C#, which data type stores fractional numbers with 6 to 7 decimal digits?

• int

• long

• float

• double

In C#, which data type stores fractional numbers with 15 decimal digits?

• int

• long

• float

• double

Which data type stores true or false values?

• int

• long

• bool

• char

Match the following C# Datatype Declarations

• 5.99

• char myLetter

• 'D'

• bool myBool

• "Hello"

• int myNum

• true

• string myText

• 5;

• double myDoubleNum

Organize these options into the right categories

Groups:

(a) Comparison operators

,

(b) Arithmetic operators

,

(c) Boolean Operators

• -

• *

• ^

• <

• >

• OR

• DIV

• <=

• MOD

• >=

• +

• !=

• AND

• NOT

• ==

• /

The ​ (a)   keyword is useful when you want a variable to always store the same value, so that others (or yourself) won't mess up your code. An example that is often referred to as a constant, is ​ (b)   (3.14159...).

Note: You cannot declare a ​ (c)   variable without assigning the value. If you do, an ​ (d)   will occur: A const field requires a ​ (e)   to be provided.​

• const
• error
• value
• PI
• constant

• Names are case-sensitive ("myVar" and "myvar" are different variables).

• True

• False

int x = 5, y = 6, z = 50;

Console.WriteLine(x + y + z);

This code snippet will output what integer value?