The comment line was introduced above and needs to be explored a little further. As stated above, a C comment line is any thing contained between the /* and the */. You should use comment lines to make your code easy to understand. You will also see in the examples the use of the C++ comment line that starts with two backslash characters //. Anything after the // to the end of the line is considered a comment. Note that although most C compilers support the C++ comments, your code might not be portable to other compilers.

The following shows examples of C comments.

/* Classic C Comment line that starts at position 1 of the line */

/* Classic C Comment line that starts at position 10 of the line */

short x; /* Classic C Comment used with a C statement */

// C++ comment starting at position 1 and saying that this line is a comment

     // C++ comment line starting at position 5

short x; // C++ comment used with a C statement

/* --------------------------------------------------------
** Classic C comment spanning multiple lines.
** -----------------------------------------------------*/

Although you are encouraged to use comment lines to explain what your program is doing, you might notice that some of the software used in the projects do not have comments. This is done basically to make sure the code fits on the page and is usually because it was explained previous to the example.