programming variables

Question 1

What is a variable in programming?

Answer 1

A named location in a computer’s memory that can store a value which may change.

Question 1

What is a variable in programming?

Answer 1

A named location in a computer’s memory that can store a value which may change.

Question 2

What is required when declaring a variable in C#?

Answer 2

A name for the variable and a specification of the data type.

Question 2

What is required when declaring a variable in C#?

Answer 2

A name for the variable and a specification of the data type.

Question 3

What is the syntax used to declare a string variable in C#?

Answer 3

string name = “Alice”;

Question 3

What is the syntax used to declare a string variable in C#?

Answer 3

string name = “Alice”;

Question 4

What character is required to end a line in C#?

Answer 4

;

Question 4

What character is required to end a line in C#?

Answer 4

;

Question 5

True or False: Variable names in C# are case sensitive.

Answer 5

True

Question 5

True or False: Variable names in C# are case sensitive.

Answer 5

True

Question 6

What are the rules for naming a variable in C#?

Answer 6

• Use consistent capitalization
• Don’t include spaces
• Don’t start with a digit

Question 6

What are the rules for naming a variable in C#?

Answer 6

• Use consistent capitalization
• Don’t include spaces
• Don’t start with a digit

Question 7

Fill in the blank: A variable must be ______ before it can be used.

Answer 7

declared

Question 7

Fill in the blank: A variable must be ______ before it can be used.

Answer 7

declared

Question 8

What are five common data types in C#?

Answer 8

• String
• Character
• Integer
• Double
• Boolean

Question 8

What are five common data types in C#?

Answer 8

• String
• Character
• Integer
• Double
• Boolean

Question 9

What data type is used for whole numbers in C#?

Answer 9

int

Question 9

What data type is used for whole numbers in C#?

Answer 9

int

Question 10

What is the process of assigning a value to a variable called?

Answer 10

initialising

Question 10

What is the process of assigning a value to a variable called?

Answer 10

initialising

Question 11

What method is used to output text to the console in C#?

Answer 11

Console.WriteLine()

Question 11

What method is used to output text to the console in C#?

Answer 11

Console.WriteLine()

Question 12

What method is used to input text from the console in C#?

Answer 12

Console.ReadLine()

Question 12

What method is used to input text from the console in C#?

Answer 12

Console.ReadLine()

Question 13

What is the purpose of the Convert.ToInt32() method?

Answer 13

To convert a string to an integer.

Question 13

What is the purpose of the Convert.ToInt32() method?

Answer 13

To convert a string to an integer.

Question 14

What is a potential algorithm for asking a user for their details?

Answer 14

* Declare variables for name, age, and height * Ask user for their name and store it * Ask user for their age and store it * Ask user for their height and store it * Output a sentence with the stored information

Question 14

What is a potential algorithm for asking a user for their details?

Answer 14

* Declare variables for name, age, and height * Ask user for their name and store it * Ask user for their age and store it * Ask user for their height and store it * Output a sentence with the stored information

Question 15

True or False: In C#, a variable name can start with a digit.

Answer 15

False

Question 15

True or False: In C#, a variable name can start with a digit.

Answer 15

False

Question 16

What is the data type used for true/false values in C#?

Answer 16

boolean

Question 16

What is the data type used for true/false values in C#?

Answer 16

bool