Chapter 1

Question 1

What is a variable?

Answer 1

A name that holds a value

Variables are fundamental in programming as they store data that can be changed during the execution of a program.

Question 2

What is an assignment?

Answer 2

Giving a variable a value, like x = 5

Assignment is a key concept in programming where a value is assigned to a variable.

Question 3

What is an int?

Answer 3

A whole number, like 4

Integers are commonly used in programming for counting and indexing.

Question 4

What is a float?

Answer 4

A number with a decimal, like 3.5

Floats are used for representing real numbers and are important for calculations that require precision.

Question 5

What does + do?

Answer 5

Adds numbers

The addition operator can also be used for string concatenation.

Question 6

What does - do?

Answer 6

Subtracts numbers

Subtraction is a fundamental arithmetic operation in programming.

Question 7

What does * do?

Answer 7

Multiplies numbers

Multiplication is essential for scaling values and calculations.

Question 8

What does / do?

Answer 8

Divides numbers

Division can result in float values if the divisor is not a factor of the dividend.

Question 9

What does // do?

Answer 9

Divides and keeps only the whole number

This is known as floor division and is useful for integer results.

Question 10

What does ** do?

Answer 10

Raises a number to a power

Exponentiation is used in many mathematical and scientific calculations.

Question 11

What does % do?

Answer 11

Gives the remainder after dividing

The modulus operator is often used to determine even or odd numbers.

Question 12

What is order of operations in Python?

Answer 12

Python follows PEMDAS

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Question 13

What is a string?

Answer 13

Words or text inside quotes, like ‘hello’

Strings are used to represent textual data.

Question 14

What is string concatenation?

Answer 14

Adding strings together, like ‘hi’ + ‘bye’ = ‘hibye’

Concatenation is a common operation for combining strings.

Question 15

What is a Boolean (bool)?

Answer 15

A value that is True or False

Booleans are critical for control flow in programming.

Question 16

What does == mean?

Answer 16

Equal to

This operator is used for comparison between values.

Question 17

What does != mean?

Answer 17

Not equal to

The inequality operator is essential for conditional statements.

Question 18

What does < mean?

Answer 18

Less than

Comparison operators are used to evaluate conditions.

Question 19

What does > mean?

Answer 19

Greater than

This operator helps in making decisions based on numerical comparisons.

Question 20

What does <= mean?

Answer 20

Less than or equal to

This operator allows for inclusive comparisons.

Question 21

What does >= mean?

Answer 21

Greater than or equal to

Similar to <=, it helps in establishing boundaries in comparisons.

Question 22

What does and mean?

Answer 22

Both sides must be true

The logical AND operator is used in compound conditions.

Question 23

What does or mean?

Answer 23

One side must be true

The logical OR operator allows for flexible condition checks.

Question 24

What does not mean?

Answer 24

Switches true to false, or false to true

The NOT operator is used to negate boolean values.

Question 25

What is an expression?

Answer 25

Code that gives a value ## Footnote Expressions can include variables, constants, and operators.

Question 26

What is an algorithm?

Answer 26

Steps to solve a problem ## Footnote Algorithms are essential for programming and computational problem-solving.

Question 27

What does if do?

Answer 27

Checks a condition and runs the code if it's true ## Footnote The if statement is a fundamental control structure.

Question 28

What does elif do?

Answer 28

Checks another condition if if is false ## Footnote Elif allows for multiple conditional branches in code.

Question 29

What does else do?

Answer 29

Runs if all above conditions are false ## Footnote The else statement provides a fallback option in conditional logic.

Question 30

What is selection in coding?

Answer 30

Picking what code runs based on conditions ## Footnote Selection structures are crucial for decision-making in programs.

Question 31

What does input() do?

Answer 31

Asks the user to type something ## Footnote Input functions are used to gather user data during program execution.

Question 32

What does print() do?

Answer 32

Shows text on the screen ## Footnote The print function is commonly used for debugging and displaying output.

Question 33

What is pseudocode?

Answer 33

Fake code to plan real code ## Footnote Pseudocode is a helpful tool for outlining algorithms before actual coding.

Question 34

What is a function?

Answer 34

Named code you can run when you want ## Footnote Functions help to organize code and promote reuse.