KembaraXtra - Computer Science: Comments in Programming Languages - A Study Guide

What are Comments?

Definition: Text added to source code to explain or provide context about the code.

Purpose:
• Improve code readability for other developers (or your future self).
• Explain the logic behind complex code sections.
• Provide usage examples.
• Document code functionality.

Impact on Execution: Comments are ignored by the compiler/interpreter. They do not affect how the program runs.

C-Style Comments

Multiline Comments:
• Syntax: Enclosed within /* and */
• Example:
/*
  This is a C-style comment.
  It can span multiple lines.
*/

Single-Line Comments:
• Syntax: Begins with //
• Note: Originally introduced in C++ and later adopted by C.
• Example:
// This is a single-line C comment.

Python Comments

Single-Line Comments:
• Syntax: Begins with #
• Example:
# This is a comment in Python.

Multiline Comments:
• No Dedicated Syntax: Python doesn't have a built-in multiline comment syntax.
• Workaround: Use multiple single-line comments.
# This is the first line of a multiline comment.
# This is the second line.
# And this is the third line.