--%>
Assignment Help - homework help

Define Unions

Unions: Unions in C and C++ are object overlays—aggregate quantities such as structs, except that each element of the union consists offset 0, and the total size of union is only as large as is required to hold its largest member (Kernighan and Ritchie 1998).

2120_unions.jpg

Unions are not supported by languages like Java. The translation has to generate different objects for the union itself and all its fields, plus the code to keep their values consistent. This results in additional overhead and can increase the state space considerably.

   Related Questions in Programming Languages

  • Q : Use of Macros used in windows-dot-h

    What is the use of Macros used in <windows.h> header files?

    		•
  • Q : What are good examples of XHTML

    What are the good examples of XHTML elements along with contents?

    		•
  • Q : What is an Infinite recursion Infinite

    Infinite recursion: Recursion which does not finish. This can effect from any of direct recursion, indirect recursion or the mutual recursion. It is generally the outcome of a logical error, and can consequence in stack overflow.

    		•
  • Q : Define the term Multiprogramming system

    Define the term Multiprogramming system: It is an operating system which is able to run multiple programs parallel.

    		•
  • Q : Define Unbounded repetition Unbounded

    Unbounded repetition: The repetition where statements in a loop's body are executed an arbitrary number of times, according to the consequences of the statements in the loop's body. All of the loop control structures in the Java offer for unbounded re

    		•
  • Q : What is Native Mode Native Mode :

    Native Mode: Whenever all the domain controllers in a specified domain are executing Windows 2000 Server. This mode permits organizations to take benefit of new Active Directory features like Universal groups, nested group membership, and the inter-do

    		•
  • Q : Simple Sorting Program in C Shell

    Assignment: Sorting You will write a simple sorting program. This program should be invoked as follows: shell% ./fastsort -i inputfile -o outputfile

    		•
  • Q : Program is prone to deadlock when

      Give a brief introduction about the operation of your program and show that you understand the idea behind threads and mutual exclusion variable. Why do we need to use mutual exclusion to control the access of the three global variables? What is the potential p

    		•
  • Q : Define Mixed Mode Mixed Mode : Permits

    Mixed Mode: Permits domain controllers executing both Windows 2000 and prior versions of Windows NT to co-exist in the domain. In mixed mode, the domain features from prior versions of Windows NT Server are still allowed, whereas some Windows 2000 fea

    		•
  • Q : State Non-modal Non-modal : In this a

    Non-modal: In this a dialog is non-modal when its parent application is not blocked from additional activity whereas the dialog is being revealed.

    		•