Coding Basics

What is a variable in coding?

• A variable in coding is a symbolic name given to a value that can change during the program's execution.

• A variable in coding is a comment within the code

• A variable in coding is a type of function

• A variable in coding is a fixed value that never changes

Explain the concept of loops in coding.

• Loops in coding are used to play music

• Loops in coding are used to repeat a block of code multiple times until a certain condition is met.

• Loops in coding are used to fly airplanes

• Loops in coding are used to cook food

Why is understanding coding basics important for aspiring computer scientists?

• Coding basics are only relevant for software developers, not computer scientists

• Understanding coding basics is not important for aspiring computer scientists

• Coding basics provide the fundamental knowledge necessary to grasp advanced computer science topics and effectively apply them in real-world scenarios.

• Computer scientists do not need to know how to code

What are the basic building blocks of coding?

• Classes

• Variables, data types, operators, control structures, functions, objects

• Inheritance

• Loops

What is the result of console.log(typeof null)?

• "null"

• "object"

• "undefined"

• "boolean"

Answer explanation

Answer: "object"

Explanation: In JavaScript, null is considered an object. This is a well-known bug in JavaScript that dates back to its early days and for backward compatibility reasons, it has never been fixed.

what is literal

• A literal is a notation for representing a fixed value in source code.

• A literal is a type of mathematical equation

• A literal is a type of programming language

• A literal is a type of figure of speech

What is a variable in programming?

• A fixed value

• A storage location with a name

• A type of loop

• A function

What is the main purpose of a function in programming?

• To store data

• To perform a specific task

• To create a loop

• To define a variable

A collection of executable programming code, associated libraries and documentations is known as a ____

• SRS

• Product

• Software

• Hardware

Which of the following for loop declaration is not valid?

• for ( int i = 99; i >= 0; i / 9 )

• for ( int i = 7; i <= 77; i += 7 )

• for ( int i = 20; i >= 2; - -i )

• for ( int i = 2; i <= 20; i = 2* i )