What is the difference between a single$-$line comment and a multiline comment?

What is the difference between a single$-$line comment and a multiline comment?

Single$-$line comments are often used to create a comment block that provides useful documentation for the program. For multiline comments, slashes $(/*$ and $*/)$ can be inserted anywhere on a line of code. The result is that the rest of the line is ignored by the compiler. We use multiline comments to provide a running commentary of language elements.

A single line comment begins with $//$ and is placed at the end of a line of code to clarify the line. A multiline comment also provides clarification as well as important information about the program. It may extend over several lines and it begins with $/*$ and ends with $*/.$