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Computer Programming
A category for questions about computer programming and programming languages.
10,506 Questions
Could you have a quadratic function with one real root and one complex root?
Provided some of the coefficients and the constant were imaginary (complex) as well, yes. For example, (x + 2)(x - 3+i) has both a real and an imaginary root, and has coefficients that are also both real and imaginary, i.e. 1, -1+i, and -6+2i.
Is it true that a derived class inherits all the members of its base class?
False. A derived class inherits the public and protected members of its base class. Private members of the base class cannot be inherited.
The cluster of pixels which are grouped together by filling up the bodies by the combination of colours for display.
Case problems electronic commerce schneider?
Gary P. Schneider is the author of a series of textbooks on Electronic Commerce.
His 6th Edition is ISBN 0-619-21704-9
In his book, he includes Case Problems at the ends of chapters.
Why is it important to use system analysis and design methodologies when building a system?
It is important because improperly coded algorithms can crash the system or require geometric scaling resources.
There is not that specific guy, but there are current-word finishing help features that can be enabled in windows IDEs.
What does the Source Code Escrow do?
Source Code Escrow is the term used for depositing the source code of software with a third party (escrow) agent. This is done to ensure maintenance of the software even if the original company who licensed the software files for bankruptcy or fails to maintain the software in any way.
it is a program that computes whit aerodynamic serious consequences with full winded service that control a component
Overriding relates to derived classes, where the derived class provides a new implementation for a method declared in the base class. The override is said to be a more-specialised implementation of the base class method, which is itself described as being a generic method. However, the derived class method can still call the base class method, if required.
When the designer of a class can predict that their class will be derived from, they will normally provide virtual methods. These methods are expected to be overridden by the derived class. Overriding a non-virtual method can have side effects if the method is also overloaded. Overriding just one overloaded method will effectively hide all the other overloads in the base class, which may be undesirable.
What is the scope of system analysis?
System Analysis.. The individual who analyzes and designs software systems and provides maintenance and support function for the users-systems design. A class can be described as a collection of objects of similar type. These objects often share the same attributes, operations, methods, relationships, and semantics. Additionally, once a class is defined any number of objects can be created and associated to that class. For example, beagles and boxers represent different breeds (i.e. instances) of "dogs" which also can be viewed as a distinct class. Furthermore, defining classes, as part of the object modeling process is not that different from the traditional system analysis process, which seeks to achieve a goal (i.e. object modeling seeks to understand a solution; whereas, system analysis which seeks to understand a problem).
Attributes are data fields that represent some property of the containing object that is shared by all instances of the object's class. Attributes normally have names (e.g., "Address") and Types (e.g., "String" or "Boolean"). An example of this would be the "Address" of a "User." In addition, attributes define the characteristics of the class that, collectively, capture all the information about the class.
Encapsulation represents packaging several items together into one unit. In addition the application of encapsulation involves keeping the external representation of an entities properties and methods independent of its actual implemented use. Encapsulation therefore, allows an entity to be leverage by other parts of an application without the fear of changes in the implementation use causing a snowball effect.
Process Modeling
Logical Process modeling is a technique for organizing and documenting the structure and flow of data through a system's processes and/or the logic, policies, and procedures to be implemented by a system's processes....
How do you compute the integral of a function using midpoint rule in C programming?
Please refer to Wikipedia where there is a full C example to do specifically this. I imagine whoever had the homework assignment before you posted their answer there.
POM
It can easily be explained by the fact that Java does not compile to object code. Java compiles to byte code that is suitable for interpretation by the Java virtual machine. C++ compiles to native machine code and therefore does not require interpretation of any kind. As a result, C++ programs run somewhat quicker than equivalent Java programs. However, because Java is interpreted, it is highly portable. Any machine with a Java virtual machine implementation (which is pretty much every device today) can run Java programs built from a single compilation. C++ requires that the code be written specifically for each platform and that the source be compiled separately upon each supported platform.
Which is more important class or object and why and which comes first?
Class is obviously more important than an object because an object is an instance of a class. A class may contain many objects, all of which are instances of that particular class. Class is also called the object factory because it contains all the statements needed to create an object and its attributes. A class also contains the statements that describe the operations that the created objejct will be able to perform. Therefor a class is more important and obviously come first.
How do you develop an accounting information system?
The development of all AISs includes the basic phrases of planning, analysis, design, reporting, implementation, and support.
How do algorithm to find the factorial of a number?
Factorial (n) = n * Factorial (n-1) for all positive values n given Factorial (1) = Factorial (0) = 1.
Pseudo-code:
Function: factorial, f
Argument: positive number, n
IF n<=1 THEN
RETURN 1
ELSE
RETURN n * f(n-1)
END IF
What is the computer program where you speak and the computer performs?
The name for voice-activated software is "voice recognition technology." There are numerous freeware and software voice recognition programs:
- Tazti (pronounced 'tasty') is a free to try program
- Dragon NaturallySpeaking Preferred
- E-speaking which is free for the first 30 days
- Speech Vibe has a trial version
A simple search of "voice recognition software" should provide ample results.
What is a constructor and what are its special properties?
A constructor creates an Object of the class that it is in by initializing all the instance variables and creating a place in memory to hold the Object. It is always used with the keyword new and then the Class name.
For instance, new String(); constructs a new String object.
Sometimes in a few classes you may have to initialize a few of the variables to values apart from their predefined data type specific values. If java initializes variables it would default them to their variable type specific values. For example you may want to initialize an integer variable to 10 or 20 based on a certain condition, when your class is created. In such a case you cannot hard code the value during variable declaration. such kind of code can be placed inside the constructor so that the initialization would happen when the class is instantiated.
Properties:
1. You need not code them explicitly. Java will automatically place a default constructor
2. You can pass arguments to the constructor
3. They can return only an object of type of that class
4. They can be made private
5. They would be executed always (Everytime a class is instantiated)
Recursive locks (also called recursive thread
mutex) are those that allow a thread to recursively acquire the same lock that it is
holding. Note that this behavior is different from a normal lock. In the normal case if
a thread that is already holding a normal lock attempts to acquire the same lock again,
then it will deadlock. Recursive locks behave exactly like normal locks when another
thread tries to acquire a lock that is already being held. Note that the recursive lock is
said to be released if and only if the number of times it has been acquired match the
number of times it has been released by the owner thread. Many operating systems do
not provide these recursive locks natively. Hence, it is necessary to emulate the
behavior using primitive features like mutexes (locks) and condition variables.
