bc: Comments
2.3 Comments
============
Comments in 'bc' start with the characters '/*' and end with the
characters '*/'. Comments may start anywhere and appear as a single
space in the input. (This causes comments to delimit other input items.
For example, a comment can not be found in the middle of a variable
name.) Comments include any newlines (end of line) between the start
and the end of the comment.
To support the use of scripts for 'bc', a single line comment has
been added as an extension. A single line comment starts at a '#'
character and continues to the next end of the line. The end of line
character is not part of the comment and is processed normally.