computer science

Question 1

Q1: What is programming?

Answer 1

A1: Giving exact step-by-step instructions to a computer so it does exactly what you want.

Question 2

Q2: What is the goal of programming?

Answer 2

A2: To speak to computers in their language and create things like games, apps, or drawings

Question 3

Q3: Name three things programming IS.

Answer 3

1. Giving instructions to a machine, 2. Solving problems logically, 3. Like writing a recipe for a robot.

Question 4

Q4: Name three things programming IS NOT.

Answer 4

1. Clicking randomly, 2. Saying “please” and hoping it works, 3. Magic that happens automatically.

Question 5

Q5: Why should you learn programming?

Answer 5

You can create your own projects, understand apps and websites, practice logical thinking, and control technology.

Question 6

Q6: What does a programmer do?

Answer 6

Writes code to tell computers exactly what to do and turns ideas into working creations.

Question 7

Q7: What is a variable?

Answer 7

A variable is like a box that stores information, such as numbers, words, or sentences.

Question 8

Q8: Give examples of data types you can store in variables.

Answer 8

A8: Text (string), sentence, number (integer), decimal (float).

Question 9

Q9: Rules for naming variables?

Answer 9

A9: Must start with a letter, can include numbers (not at start), use underscores for spaces, and cannot use spaces, symbols, or Python keywords.

Question 10

Q10: What is wrong with these variable names: 1name, my name, my-name, print?

Answer 10

A10: 1name → starts with number; my name → has space; my-name → hyphen not allowed; print → Python keyword.

Question 11

Q11: What is addition, subtraction, multiplication, division, and modulus?

Answer 11

Addition + sums numbers, subtraction - subtracts, multiplication * multiplies, division / divides, modulus % gives remainder.

Question 12

Q12: How does + behave with strings?

Answer 12

A12: It joins strings (concatenation).

Question 13

Q13: How does * behave with strings?

Answer 13

A13: It repeats strings.

Question 14

Q14: What happens if you try “Hello” + 5?

Answer 14

It causes a TypeError because you cannot add a string and a number directly.

Question 15

Q15: What does input() do?

Answer 15

A15: Lets the computer ask the user a question and stores the answer as text (string).

Question 16

Q16: How do you get a number from input()?

Answer 16

A16: Use int(input()) to convert the text to a number.

Question 17

Q17: How do you fix the error when trying “Hi” + 5?

Answer 17

A17: Convert the number to a string with str(5) → “Hi” + str(5).

Question 18

Q18: How do you save a Python program?

Answer 18

A18: Click File → Save As…, give a name (e.g., hello_user.py), and click Save.

Question 19

Q19: Why is input() important?

Answer 19

A19: It makes programs interactive and allows the computer to “talk” with the user.

Question 20

Q20: What is the difference between the variable name and content inside?

Answer 20

: The variable name cannot have symbols like !, but the content inside (string) can, e.g., fruit = “Apple!”.