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→Big Picture, Clarifications, Recommendations: Added header protection section
'''NOTE:''' In the assignment spec, any value in parentheses ( '''()''' ) is the '''default value''' of that particular parameter.
== Headers ==
In this assignment, you need to create a number of header files. You will most likely run into an issue regularly encountered by software developers which is multiple includes, chained includes, and cyclic includes (includes that end up including themselves).
To resolve and prevent these issues, use the following guidelines:
* Use header include protection. Typically this is done by using preprocessor directives to prevent a header from being included twice. For a header named '''MyHeader.h''', it looks like this:
<pre>
#ifndef __MYHEADER_H__
#define __MYHEADER_H__
...
// Header content
...
#endif
</pre>
* Try to include headers '''only''' from cpp files. While you should encounter few issues if you consistently apply the suggestion above, you can prevent even more potential problems by including headers only from cpp files.
== iFrame ==
