SGO Computer Science (23-24)

What is a variable in programming?

• A variable is a named storage location that holds a value.

• A variable is a type of loop in programming.

• A variable is a mathematical equation.

• A variable is a function in programming.

What are the different data types in programming?

• characters, arrays, objects, lists

• integers, doubles, characters, booleans

• strings, arrays, objects, booleans

• integers, floating-point numbers, strings, booleans

What is the difference between int and float data types?

• The int data type is used to represent positive numbers, while the float data type is used to represent negative numbers.

• The int data type is used to represent characters, while the float data type is used to represent strings.

• The int data type is used to represent numbers with decimal points, while the float data type is used to represent whole numbers without decimal points.

• The int data type is used to represent whole numbers without decimal points, while the float data type is used to represent numbers with decimal points.

How do you declare a variable in Python?

• x = 10

• x == 5

• x = '5'

• x = 5

What is the purpose of using variables in programming?

• The purpose of using variables in programming is to slow down the execution of the program.

• The purpose of using variables in programming is to store and manipulate data.

• The purpose of using variables in programming is to make the code more complex.

• The purpose of using variables in programming is to confuse the programmer.

What is the syntax for declaring a string variable in JavaScript?

• var myString = 'Hello';

• var myString = 'Hello World';

• const myString = 'Hello World';

• let myString = 'Hello World';

What is the value of a variable called before it is assigned a value?

• void

• undefined

• empty

• null

What is the scope of a variable in programming?

• The scope of a variable in programming refers to the portion of the program where the variable is accessible.

• The scope of a variable in programming refers to the size of the variable.

• The scope of a variable in programming refers to the location of the variable in memory.

• The scope of a variable in programming refers to the data type of the variable.

What is the data type of the variable 'x' if it is assigned the value 5?

• boolean

• integer

• string

• float

What is the data type of the variable 'name' if it is assigned the value 'John'?

• string

• float

• integer

• boolean