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Question: What does the modulus (%) operator do? Answer: The modulus operator returns the remainder of a division operation. For example, 5%2 equals 1 because dividing 5 by 2 gives

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Question: I have a number of datawindows in a window. In a post-construct event I am making a call to another datawindow. Every so often when I open the window

Question: I am an engineer at GNB Technologies and have been programming for quite some time. Last week a friend of mine asked me an interesting question that stumped me.

You can generate random numbers in JavaScript using the Math.random() method. This function returns a fractional random number between 0 and 1. Unlike other languages, JavaScript will initialize a random

Consider the following program: class Exception {}; int main() { try { throw Exception(); // where is the exception stored? } catch( Exception & ex) // catch by reference {}

The terms heap and free-store are used interchangeably when referring to dynamically allocated objects. Are there any differences between the two? Technically, free-store is an abstract term referring to unused

Suppose you have an application that reads input from the keyboard. How can you detect whether alphabetic data is being entered into an integer field from a cin statement? The

Suppose you have a class called A, which doesn’t have a default constructor, and you want to embed an instance of this class as a member of another class, B:

Does you compiler accept the following code? class A { public: void f(int); }; void (A::*pm)(int) = A::f; // #1 no ampersand before A::f A standard-compliant compiler should flag line

Question: How do I display the next page after a user enters data into a field and presses the Enter key? Answer: This is both possible and fairly easy. Here’s

Question: How can I generate a unique number using JavaScript? Answer: You can generate random numbers in JavaScript using the Math.random() method. This function returns a fractional random number between

Question: I call the following function to display the date in “month, date, year” format. It displays in the right format (for example, January 7, 2000) in Netscape 4.0. But

With HTML 4.0, you can add keyboard shortcuts to your Web page. To achieve this, you place the ACCESSKEY attribute inside the form element tag. It is advisable to add

Question: I am getting this error message in the event viewer for my Exchange Server: Event Id: 1025Source: MSExchaneIS PrivateType: WarningCategory: GeneralDescription: An error occurredFunction name or description of problem:

You can use the SELECT control to present a predefined list to the user. The SELECT control is useful for quickly selecting one or more items from a predefined or

Volatile objects are used in multithreaded applications and applications that map hardware devices into registers. Although you can declare an STL container object with the volatile qualifier, you will not

C++ doesn’t specify whether char is signed or unsigned. Thus, the interpretation of the following declaration: char arr[100]; Is platform-dependent: some compilers will treat arr as an array of 100