Question: I’m trying to make a calculator program using switch statements for +,-,* and /. I know how to handle and divide by zero error. I also have to use

Question: I have a frameset that consists of two frames. The top frame is a horizontal frame that displays a bulletin message in a banner if there is some sort

Question: Is it possible to use JavaScript to create a custom page and pass all the values in the page to an online form such that I do not have

Question: What is the significance of const return type from a function?Similar to: const int func1(); Answer: The const in this position guarantees that the caller of the function doesn’t

Question: Is there a profiler like JProbe which supports the Microsoft Virtual Machine? I already tried the -prof switch on the command line, but that doesn’t do everything I need.

Question: If I can use the “InetAddress” class to acquire the IP address of a computer, is there a way to get the computer’s name from an IP address? Answer:

C++ inherited from C the global variable errno which indicates the success status of a previous operations. An errno value of 0 indicates that the previous operation was successful whereas

To avoid undesirable changes to an argument passed by reference, you pass it as a const parameter. For example: void f(const string & s); // f can’t change s However,

In a previous tip, I discussed techniques for treating a vector object as an array. The two main forms of obtaining the internal array’s address are: &*v.begin(); // obtain address

The value of an uninitialized automatic enum variable is indeterminate. Uninitialized global and static enum variables have a zero value by default. In this regard, enum variables are similar to

The operator % returns the remainder of dividing its two operands. For example: b=10%3; // b equals 1 Don’t confuse the modulus operator with the division operator: c=10/3; // division,

Question: Is it possible to make changes to the text on the tabs? Answer: Sure, with the tab you want to change selected, just click Form > Rename This Page.

Question: We have Informix IDS 7.30 running under SCO 5.0.5. Backups by ontape fail with an error: “I/O read chunk 90, pagenum 2, pagecnt 1 –> errno = 9″But when

Question: How can I lock a row in a table from a stored procedure? Answer: You shouldn’t have to worry about locking. It’s done automatically by the engine when you

Question: We have plans to upgrade our AIX operating system to version 4.3. We are using Informix 7.31. Do we need any new Informix components (compilers etc.)? Answer: You probably

Question: I have seen plenty of text on script dealing with mouseovers, or ‘animation’ where an image can change every few seconds, but is there a way I can write

Question: I need to perform a validation on five fields in a form. The logic is: If field1 length >0 then disallow form submission if field2,field3, field4, and field5 are

Question: I want to set up a series of links in a pop-up window which, when clicked, will (a) close the popup window and (b) redirect the main page to

The iostream family of classes provides the following member functions and operators for checking the stream’s state: bool good() // returns true if no error flag is setbool eof() //

An expression may consist of one or more subexpressions. You can group several expressions in one statement and separate them with commas. For example: if(++x, –y, cin.good()) // three expressions

A recent subscriber of one of the C++ newsgroups posted the following question:Why did the C++ standardization committee created a const_iterator instead of a const iterator? Or, at least, why

In certain contexts, you have to treat a vector as an array of its elements. For example, suppose you have a function that takes int * as its argument. How

The associative containers std::map, std::multimap, std::set, and std::multiset have the following three overloaded forms of the member function erase(): class map // simplified for brevity{public://..other members void erase(iterator position); //

Question: Every class in Java is supposed to extend the Object class by default. In case a user class extends some other class (e.g., if myclassextends yourclass), then is it

Question: After I have already declared an object, how can I call its constructor again to re-initialize its member variables? Answer: You can’t do that. C++ guarantees that for each

Question: What is the purpose of static methods in Java? Answer: Static methods can be invoked without an instance of an object. They provide the ability to execute methods in

Question: Can I specify the column I want to select from as an argument to the procedure? Something like: create procedure show_product(language char(2), ID integer) returning char(255);define p_prod_name CHAR (255);select

Question: I cannot initialize the program after I have installed it. When I run “oninit”, it seems to work, but then when I run “onstat” it tells me that the