Examples of Procedures in High School Computer Science

📚 Quick Study Guide

• 💻 What are Procedures? Procedures (also called functions or subroutines) are self-contained modules of code that accomplish a specific task. They promote code reusability and make programs easier to understand.
• 🧩 Types of Procedures:
  • ⚙️ Functions: Procedures that return a value.
  • 📢 Subroutines (or Void Functions): Procedures that perform a task but do not return a value.
• ✏️ Key Concepts:
  • 📦 Parameters: Values passed into a procedure.
  • ↩️ Return Values: The value a function sends back after execution.
  • 🌐 Scope: The region of the program where a variable is accessible.
• 🧮 Example Syntax (Python):
  • Function Definition: def my_function(param1, param2):
  • Function Call: result = my_function(value1, value2)

🧪 Practice Quiz

1. Which of the following best describes a procedure in computer science?
   1. A) A variable that stores data.
   2. B) A self-contained module of code that performs a specific task.
   3. C) A type of loop.
   4. D) A conditional statement.
2. What is the primary benefit of using procedures in programming?
   1. A) Makes code run slower.
   2. B) Increases code complexity.
   3. C) Promotes code reusability and simplifies programs.
   4. D) Reduces the need for comments.
3. Which type of procedure returns a value after execution?
   1. A) Subroutine
   2. B) Void Function
   3. C) Function
   4. D) Method
4. What is the purpose of parameters in a procedure?
   1. A) To define the procedure's name.
   2. B) To store the procedure's code.
   3. C) To pass values into the procedure.
   4. D) To specify the procedure's return type.
5. What does the term "scope" refer to in the context of variables within procedures?
   1. A) The size of the variable.
   2. B) The type of data the variable can store.
   3. C) The region of the program where the variable is accessible.
   4. D) The speed at which the variable is processed.
6. In Python, how is a function typically defined?
   1. A) class my_function():
   2. B) procedure my_function():
   3. C) def my_function():
   4. D) int my_function():
7. Which of the following is an example of a subroutine (void function)?
   1. A) A function that calculates the square root of a number.
   2. B) A function that prints a message to the console.
   3. C) A function that returns the length of a string.
   4. D) A function that adds two numbers and returns the sum.