A comment is a note that you add to a program to explain what the code is doing. Comments are ignored by the computer when the program is run. They are useful for making notes to yourself or to other people who will read your code.
In most programming languages, comments are written with a pound sign (#) or double slash (//) at the beginning of the line. Anything on that line after the pound sign or double slash is considered a comment and is ignored by the computer.
What does comment on mean?
In programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters. What is this word comment? The word "comment" is used in programming to describe a line or block of text that is not executed as part of the program. Comments are used to add notes or explanations to code, and can be used to disable code that is no longer needed.
What does make a comment mean?
In computer programming, a comment is a programmer-readable explanation or annotation in the source code of a computer program. They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters. Comments are generally formatted as either block comments or line comments.
Block comments are typically used to provide a high-level description of a piece of code, or to annotate a particularly tricky section of code. They are usually delimited by a pair of special characters, such as /* and */, and can span multiple lines.
Line comments are typically used to annotate a single line of code, and are usually delimited by a single special character, such as //.
How do you write a comment?
In order to write a comment in most programming languages, you will need to use a specific symbol or set of symbols that indicates to the compiler or interpreter that the text that follows is a comment. For example, in C++ you would use the double slash symbol (//) to start a comment that extends to the end of the line:
// This is a comment in C++
Similarly, in Java you would use the // symbols, but you can also use /* */ symbols to write a comment that spans multiple lines:
// This is a single-line comment in Java
/* This is
a multi-line
comment in Java */
The specific symbols used for comments vary from language to language, so you'll need to consult a reference for the language you're using. But in general, the idea is the same: comments are used to add explanatory text to your code that is ignored by the compiler or interpreter. What is a good comment? A good comment is one that is clear, concise, and informative. It should add value to the code, and not simply reiterate what the code is already doing. A good comment can make code more understandable, and make it easier to maintain.