Implementing Header files.

AOA,
Guys,I want to know about information hiding that is making header and implementation files.I tried it but program is giving linker error in constructor.Even i checked the author's code from his website who's book i am studding with.It also have same linker error with his constructors while information hiding.
Your question is a little vague. Without seeing code or the error, there's not much we can do to help solve your problem.

What I can do is link you to this article I wrote on the subject:
http://cplusplus.com/forum/articles/10627/
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