Single line comments start with //.
This example uses a single line comment before each line, to explain the code:
This example uses a single line comment at the end of each line, to explain the code:
Multi-line comments start with /* and end with */.
This example uses a multi-line comment (a comment block) to explain the code:
|It is most common to use single line comments.
Block comments are often used for formal documentation.
Using comments to prevent execution of code, are suitable for code testing.
Adding // in front of a code line changes the code lines from an executable line to a comment.
This example uses // to prevent execution of one of the code lines:
This example uses a comment block to prevent execution of multiple lines: