<div>
Show sample of Your code please...<br />

</div>


<div>
Edited text of question<br />

</div>


<div>
Send it to ok@pansw.com<br />
<br />

</div>


<div>
Did you try to #include &lt;complex&gt; (without .h)?<br />

</div>


Did you try to #include <complex> (without .h)?


<div>
Which version of VC? &nbsp;VC5 puts the standard libary in the std namespace, so you'll need to qualify those names with std. &nbsp;Try using std::complex.<br />

</div>


Which version of VC?  VC5 puts the standard libary in the std namespace, so you'll need to qualify those names with std.  Try using std::complex.


<div>
Try copying the &lt;complex.h&gt; from the UNIX include directory into the source directory of the WINDOWS machine and compile.<br />

</div>


Try copying the <complex.h> from the UNIX include directory into the source directory of the WINDOWS machine and compile.


<div>
pdorai, did you try my suggestion? &nbsp;You also didn't answer my email. &nbsp;Please provide some feedback.<br />

</div>


pdorai, did you try my suggestion?  You also didn't answer my email.  Please provide some feedback.


<div>
<div class="content wysiwyg-content">
I used standard Unix C++ compiler with the &lt;complex.h&gt; header file. This allows me to use the complex abstract data type in the main program.<br />
<br />
Okay, but when I use the same program, after changing the necessary library file names for use on the MSDEV Visual C++ environment, I get the &quot;unknown decl - identifiers&quot; error message for the the ADT type &quot;complex&quot;. It is accepted under the Unix compiler, but not under the MSDEV compiler. <br />
<br />
xyu --&gt; my code is about a thousand lines. So I can attach an email to you if you give me your e-mail address.
</div>
</div>


I used standard Unix C++ compiler with the <complex.h> header file. This allows me to use the complex abstract data type in the main program.

Okay, but when I use the same program, after changing the necessary library file names for use on the MSDEV Visual C++ environment, I get the "unknown decl - identifiers" error message for the the ADT type "complex". It is accepted under the Unix compiler, but not under the MSDEV compiler. 

xyu --> my code is about a thousand lines. So I can attach an email to you if you give me your e-mail address.

decl - identifiers

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.