Meaningful Identifiers Flashcards

1️⃣ Familiarise yourself with the flashcards:

Look through all the flashcards to see what's on both sides.
Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

Look at the question or prompt on each card and try to remember the answer before flipping it over.
Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is an identifier in programming?

A name you give to a variable, constant, or function.

It clearly shows what the data or code is for.

They make code easier to read, share, and fix.

total_price, because it shows what the value means.

Start with a letter. Use letters, digits, or underscores. No spaces. Do not use reserved words.

A word the language uses, like if. You cannot use it as an identifier.

No. Identifiers are case-sensitive, so they are different.

Lower case words joined with underscores, like total_price.

Use clear names in UPPER_CASE, like MAX_SPEED.

Use nouns for variable names. Use verbs for function names.

For a short, simple counter. Avoid it for other names.

Long enough to be clear, but not too long to type.