How does compiler process comments?

The compilation process can be divided into four steps, i.e., Pre-processing, Compiling, Assembling, and Linking. The preprocessor takes the source code as an input, and it removes all the comments from the source code. The preprocessor takes the preprocessor directive and interprets it.

How does a compiler ignore comments?

Comments are used to document what a program is for and how a program is constructed. Comments help the programmers or users to communicate and understand the program. Comments are not programming statements and are ignored by the compiler. When the compiler sees //, it ignores all text after // in the same line.

How do you comment in code?

How to comment Code: Primarily, a single “block” comment should be placed at the top of the function (or file) and describe the purpose the code and any algorithms used to accomplish the goal. In-line comments should be used sparingly, only where the code is not “self-documenting”.

Does the compiler generate machine code for comments?

No, they are simply ignored by the compiler. Comments’ sole purpose is for human reading, not machine.

Are code comments compiled?

Comments are normally stripped out during preprocessing, so the compiler itself never sees them at all. They can (and normally do) slow compilation a little though–the preprocessor has to read through the entire comment to find its end (so subsequent code will be passed through to the compiler.

How do you comment out code in Python?

The only mechanism to comment out Python code (understood as code ignored by the interpreter) is the #. As you say, you can also use string literals, that are not ignored by the interpreter, but can be completely irrelevant for the program execution.

What is the purpose of adding comments in the code in Java?

Comments can be used to explain Java code, and to make it more readable. It can also be used to prevent execution when testing alternative code.