Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors

Comments in C

In C programming, comments are used to add explanatory notes or documentation to the source code. Comments are ignored by the compiler and are not executed as part of the program.

There are two types of comments in C programming:

1. Single-line comments:

These comments begin with // and extend to the end of the line. Anything after // on the same line is considered a comment and is ignored by the compiler.

Example:

// This is a single-line comment

printf("Hello, world!"); // This line prints "Hello, world!"

2. Multi-line comments:

These comments begin with /* and end with */. Anything between these symbols is considered a comment and is ignored by the compiler. Multi-line comments can span multiple lines.

Example:

/* This is a multi-line comment
   that spans multiple lines */

printf("Hello, world!"); /* This line prints "Hello, world!" */

Comments are useful for documenting the purpose of variables, functions, and code blocks, as well as for debugging and troubleshooting. Good use of comments can help make the code more readable and understandable to other developers who may need to work with it in the future.

C Programming most asked questions on comments:

Q: What is a comment in C programming?

A: A comment in C programming is a piece of code that is ignored by the compiler and is used to add explanatory notes or documentation to the source code. Comments are not executed as part of the program.

Q: What are the two types of comments in C programming?

A: The two types of comments in C programming are single-line comments and multi-line comments.

Q: How do you write a single-line comment in C programming?

A: A single-line comment in C programming begins with // and extends to the end of the line. Anything after // on the same line is considered a comment and is ignored by the compiler.

Q: How do you write a multi-line comment in C programming?

A: A multi-line comment in C programming begins with /* and ends with */. Anything between these symbols is considered a comment and is ignored by the compiler. Multi-line comments can span multiple lines.

Q: Why are comments important in programming?

A: Comments are important in programming because they help make the code more readable and understandable to other developers who may need to work with it in the future. Comments can also be used to document the purpose of variables, functions, and code blocks, as well as for debugging and troubleshooting.

Q: Can comments be nested in C programming?

A: Yes, comments can be nested in C programming. However, it is not recommended to nest comments too deeply, as it can make the code harder to read and understand.

Q: What is the purpose of using comments in C programming?

A: The purpose of using comments in C programming is to add explanatory notes or documentation to the source code. Comments help make the code more readable and understandable to other developers who may need to work with it in the future, and can be used to document the purpose of variables, functions, and code blocks, as well as for debugging and troubleshooting.

MCQs on Comments in C Programming:

Which of the following is the symbol used for single-line comments in C programming?
A. /
B. //
C. #
D. ;
Answer: B. //

Which of the following is the symbol used for multi-line comments in C programming?
A. /
B. //
C. #
D. /* /

Answer: D. / */

What is the purpose of comments in C programming?
A. To add functionality to the code
B. To change the output of the program
C. To add explanatory notes or documentation to the code
D. To speed up the program
Answer: C. To add explanatory notes or documentation to the code

Can comments be nested in C programming?
A. Yes, but it is not recommended
B. No, comments cannot be nested
C. Yes, and it is recommended to nest comments as much as possible
D. Only single-line comments can be nested
Answer: A. Yes, but it is not recommended

Which of the following is a benefit of using comments in C programming?
A. Making the code run faster
B. Making the code shorter
C. Making the code more difficult to read
D. Making the code more readable and understandable to other developers
Answer: D. Making the code more readable and understandable to other developers