Improving code readability - Cheat Sheet & Quick Revision

Recall & Review

beginner

Why is using meaningful variable names important?

Meaningful variable names help others and your future self understand what the code does without guessing. It makes the code clearer and easier to follow.

beginner

What is the benefit of adding comments in your C code?

Comments explain why the code does something, not just what it does. They help readers understand the purpose and logic behind the code, especially complex parts.

beginner

How does consistent indentation improve code readability?

Consistent indentation shows the structure of the code clearly. It helps readers see which code belongs inside loops, conditions, or functions, making it easier to follow.

intermediate

What is the purpose of breaking code into smaller functions?

Smaller functions do one thing well. This makes code easier to test, understand, and reuse. It also reduces repetition and clutter in the main code.

intermediate

Why should magic numbers be avoided in code?

Magic numbers are unexplained numbers in code. They confuse readers. Using named constants instead explains what the number means and makes the code easier to change.

Which practice improves code readability the most?

A Writing all code in one long function

B Using random indentation

C Avoiding comments

D Using meaningful variable names

Meaningful variable names make code easier to understand. Writing all code in one function or avoiding comments makes it harder to read.

What does consistent indentation help show in C code?

A The memory usage

B The structure and blocks of code

C The size of variables

D The speed of the program

Indentation visually shows which code belongs inside loops, conditions, or functions, clarifying the program's structure.

Why should you avoid magic numbers in your code?

A They make code confusing and hard to maintain

B They make the program run slower

C They increase the file size

D They cause syntax errors

Magic numbers are unexplained values that confuse readers. Using named constants clarifies their meaning.

What is a good reason to add comments in your code?

A To replace meaningful variable names

B To make the code run faster

C To explain why the code does something

D To increase the number of lines

Comments help explain the purpose and logic behind code, making it easier to understand.

Breaking code into smaller functions helps by:

A Making code easier to understand and reuse

B Making the program use more memory

C Making the code longer and complex

D Reducing the number of variables

Smaller functions focus on one task, improving clarity and reusability.

List three ways to improve code readability in C.

Think about how to make code easier to understand for others.

Explain why breaking code into smaller functions helps readability.

Consider how smaller pieces make a big task simpler.