All Standard C++ header files must be included in the following way: #include //note: no “.h” extension#include//…other #include statements That is, the “.h” extension should not be used. This technique

Question: I am trying to create a program that will log HTML color schemes to a file, and I can’t get C++ to count in hex. I looked in the

Question: I’m working with large multidimensional dataset (> 10 dimensions and > 100,000 points). One particular problem I have is the use of virtual memory (for example, via new). When

Question: I have taken two semesters of C++ and feel pretty confident about the whole OOP aspect of things. I have a good understanding of all the fundamentals of C++.

Question: What is a macro? What is the difference between macros and functions? How do you invoke a macro? Please give an example of code. Answer: A macro is simply

Question: What is an “lvalue”? How does it relate to “rvalue”? Answer: An lvalue is simply a value on the left side of an expression, and an rvalue is a

Question: Is there a way to make a window like the Stay on Top window, but make it stay behind? For example, if you click on the desktop it does

Question: I am thinking of learning C++, and I have not yet looked into it. Why would one choose to code in C++ instead of any other language? What is

Question: I have been doing VB since 1.0, and Frontpage since 1.1, however VID’s IDE has me mystified. What book would you recomend. I am at a total loss.Syd Answer:

Question: How is it possible to write a vertical text (with TextOut procedure) in a bitmap (Delphi 2)? Answer: I know how to do this with a TLabel descendant, but

Question: I recently started programming with Borland C++ Builder and the help files aren’t much help at all. I would like to know what the code is for executing another

Question: I am programming with Visual C++ 5.0 and the class library StarView from StarDivision.Looking at the Source from StarView, I found bad code: void** p = new (void*)[100];…delete p;

If you’re using Internet Information Server with Active Server Page technology for hosting your Web site, here is a simple way to include a hits counter and the date the

If you’re using IIS 3.0 with Active Server Page technology for hosting yourWeb site, here is a very simple way to highlight comments in your ASP pages andreduce page download

Question: I am writing a program that needs to keep a running total of ID numbers allocated for this reason. The ID numbers are in an auto-increment field. I need

Question: How do you select the maximum value of a column in a DBGrid when displayed through a query? (query SQL:select max(CustNo) from customer, and get error message:”the table is

Question: I read somewhere that Object Pascal, the language used in Delphi, does not support multiple inheritance. Is this true? Answer: Yes, this is true. Object Pascal’s inheritance model follows

Question: In my Delphi 1.0 application, when I open a form (e.g. ClientForm.Show) I get an error message: “Error creating window.” This error occurs when several forms (nine or ten

Question: I developed a database using AS400 components. Everything compiled and it was working for awhile. I have not changed anything in the project and now whenever I close the

Question: I am looking for a good introduction book to Delphi. I know Turbo Pascal, but I am still a beginner in the field of OOP and in the field

Question: I want to compute the number of the week. Thanks in advance PLM Answer: This is pretty basic stuff. If you want the current week of the month, a

Question: How can I expose the ItemData property of a ListBox to use it for storing longint data that corresponds to each item in the list in Delphi 3.0? I

The Standard Library supplies the class template auto_ptr which automatically deallocates heap memory. Likewise, local objects are reclaimed in case of exiting their scope or during “stack unwinding” caused by

It is not uncommon for C++ code fragments to be called by non-C++ programs such as a C-based communication software, COBOL based TP monitors and the likes. However, global functions

Operator new throws an exception of type std::bad_alloc when it fails to allocate the requested amount of memory. Yet in some circumstances, or due to performance considerations, throwing an exception

A class can declare external functions or other classes as friends. Friendship grants full access to all of the grantor’s members, even private and protected ones: void encrypt (string &

Question: How do I display a quote through scripts? For example, I want to print the quotes in a line but JavaScript reads the quotes as part of the coding.

Question: How can I change the color of a URL link when the mouse passes over the link? I am using Netscape version 3.0. Answer: Unfortunately, you need to have