How can you comment code in C?

How can you comment code in C?

• A. Using `#` for single-line comments and `/* ... */` for multi-line comments
• B. Using `//` for single-line comments and `#! ... #!` for multi-line comments
• C. Using `//` for single-line comments and `/* ... */` for multi-line comments
• D. Using `--` for single-line comments and `/* ... */` for multi-line comments

Answer: (C)

In C, commenting code is essential for adding explanations or notes that help others (or yourself later) understand the code. The language provides two primary ways to add comments: single-line comments and multi-line comments. Single-line comments in C are initiated using double forward slashes (`//`). Everything following these slashes on that line will be treated as a comment and ignored by the compiler. This is particularly useful for brief explanations or notes alongside specific lines of code. For multi-line comments, C uses the slash and asterisks format (`/* ... */`). This allows for comments that span multiple lines, making it ideal for longer descriptions or temporarily disabling larger blocks of code during debugging. Therefore, the statement that identifies the correct methods for commenting in C—using `//` for single-line comments and `/* ... */` for multi-line comments—is accurate, capturing the standard practices used by C programmers.

In C, commenting code is essential for adding explanations or notes that help others (or yourself later) understand the code. The language provides two primary ways to add comments: single-line comments and multi-line comments.

Single-line comments in C are initiated using double forward slashes (//). Everything following these slashes on that line will be treated as a comment and ignored by the compiler. This is particularly useful for brief explanations or notes alongside specific lines of code.

For multi-line comments, C uses the slash and asterisks format (/* ... */). This allows for comments that span multiple lines, making it ideal for longer descriptions or temporarily disabling larger blocks of code during debugging.

Therefore, the statement that identifies the correct methods for commenting in C—using // for single-line comments and /* ... */ for multi-line comments—is accurate, capturing the standard practices used by C programmers.