1. I am having trouble compiling/running the polymorphism examples in Visual C++ 6.
2. I am trying to run the examples (or exercises) for Chapter 16 of C++HTP4, but they do not seem to work when I create them with the Visual C++ 6 Introductory Edition. What is wrong?
3. I lost my user's guide for the C & C++ MULTIMEDIA CYBER CLASSROOM (first edition). What is the registration number?
4. Exercise 5.22 on page 352: Why do I get a compiler error on line 21?
5. I have been reading your book, C++ How to Program and I have a couple of questions. Can C++ be used to make any kind of software application? Can C++ be used to make web applications?

You might not have configured the RTTI settings in your IDE, as explained in the text.

For Visual C++ 6:

• Select Project > Settings > C/C++.

• Select C++ Language from the Category drop-down list.

• Ensure that Enable Run-Time Type Information (RTTI) is checked.

Equivalent instructions for Visual Studio .NET:

• Right click the project name in the Solution Explorer, and select Properties from the pop-up menu.
• In the dialog that appears, select Configuration Properties > C/C++ > Language on the left.
• On the right, change Enable Run-Time Type Info to "Yes (/GR)".

You cannot use Visual C++ 6 Introductory Edition to create CGI applications, because of the dialog that is inserted into every application. You will need to use one of the other compilers mentioned in the preface.

06-0-01-01-4-016E6-DF6A9C

Be sure to enter this registration number EXACTLY as shown above.

The declaration int x in the for loop is scoped to the body of the for loop according to the new C++ standard. Thus, the variable does not exist when the compiler reaches line 21. To fix the error, declare variable x before the loop.

C++ is one of the most flexible programming languages in existence today. Virtually any type of program can be created using C++. C++ can indeed be used to create Web applications. CGI scripts, ISAPI and ATL Server all use C++. ISAPI and ATL Server are Microsoft technologies.