<div>
<a href="http://www.cs.cf.ac.uk/Dave/C/node35.html" rel="ugc">http://www.cs.cf.ac.uk/Dave/C/node35.html</a><br />
<a href="http://www.cs.wisc.edu/~hasti/cs368/course/examples/sepCompilation.html" rel="ugc">http://www.cs.wisc.edu/~hasti/cs368/course/examples/sepCompilation.html</a><br />
<a href="http://www.drpaulcarter.com/cs/module.php" rel="ugc">http://www.drpaulcarter.com/cs/module.php</a><br />
<br />
the above links should be helpful 
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http://www.cs.cf.ac.uk/Dave/C/node35.html [http://www.cs.cf.ac.uk/Dave/C/node35.html]
http://www.cs.wisc.edu/~hasti/cs368/course/examples/sepCompilation.html [http://www.cs.wisc.edu/~hasti/cs368/course/examples/sepCompilation.html]
http://www.drpaulcarter.com/cs/module.php [http://www.drpaulcarter.com/cs/module.php]

the above links should be helpful

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<div class="content wysiwyg-content">
I've got:<br />
<br />
/////////CPair.cpp:<br />
class CPair{<br />
&nbsp; &nbsp;//stuff here...<br />
}<br />
<br />
//CPair::methods...<br />
<br />
<br />
////////Main.cpp:<br />
void someMethod(){<br />
&nbsp; &nbsp; CPair pair;<br />
}<br />
<br />
but it's complaining that the CPair class is undefined?!?!?! How can I get around this??? Maybe some header file? :S
</div>
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I've got:

/////////CPair.cpp:
class CPair{
   //stuff here...
}

//CPair::methods...


////////Main.cpp:
void someMethod(){
    CPair pair;
}

but it's complaining that the CPair class is undefined?!?!?! How can I get around this??? Maybe some header file? :S

uses undefined class???

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.