Worksheet on identifying logical errors in code

📚 Topic Summary

Logical errors are mistakes in a program's source code that result in unexpected behavior. Unlike syntax errors, which prevent the code from running, logical errors allow the program to execute but produce incorrect results. Identifying and correcting these errors often requires careful debugging and a thorough understanding of the intended program logic.

This worksheet helps you practice identifying common logical errors in code snippets. You'll work through vocabulary, fill-in-the-blanks, and critical thinking exercises to reinforce your understanding. Good luck! 👍

🧠 Part A: Vocabulary

Match each term with its correct definition:

1. Terms:
   • 🐛 Debugging
   • 🧮 Algorithm
   • 🚦 Conditional Statement
   • 🔁 Loop
   • 📊 Variable
2. Definitions:
   • A: A named storage location in memory that holds a value.
   • B: A sequence of instructions designed to perform a specific task.
   • C: A control flow statement that executes code based on a boolean condition.
   • D: The process of identifying and removing errors from software.
   • E: A control flow statement that repeats a block of code until a certain condition is met.

Write the correct letter (A, B, C, D, or E) next to each term:

• Debugging: ____
• Algorithm: ____
• Conditional Statement: ____
• Loop: ____
• Variable: ____

✍️ Part B: Fill in the Blanks

Complete the following paragraph using the words provided below:

(Words: boolean, logic, output, syntax, true)

A logical error occurs when the program's ______ is flawed, leading to an incorrect ______. Unlike ______ errors, which prevent the program from running, logical errors allow the program to execute, but the results are not what was intended. For example, a conditional statement that always evaluates to ______ regardless of the input will cause problems. Understanding ______ expressions is crucial to avoiding logical errors.

🤔 Part C: Critical Thinking

Consider the following scenario:

A program is designed to calculate the average of three numbers. However, the calculated average is consistently lower than expected. What are some potential logical errors that could be causing this issue? Describe at least two possibilities and how you would go about debugging them.