--%>
Assignment Help - homework help

Reference variables

Reference variable behave similar to both, a value variable and a pointer variable. Value variable are used to hold some numeric values, pointer variable are used to hold the address of some other variable. In programme code reference variable is used similar to that of a value variable but has an action of a pointer variable." Reference variable benefits from the simplicity of the value variable and power of pointer variable". It does provide the flexibility supported by the pointer variable, unlike pointer when a reference is bound to a variable, then its binding cannot be changed. All the accesses made to the reference variable as same as to the access to which it is bound. The general format of declaring reference variable is:

 

Data type and reference variable + value variable

Where data type can be standard or user defined type:

Like Int, char, float etc.

& reference operator

The reference variable must be initialized to same variable only at the point of its declaration. Initialization of reference variable following its declaration sources compilation error.

 




 

   Related Questions in Programming Languages

  • Q : Describe Uninitialized variable

    Uninitialized variable: It is a local variable which been declared, however has had no value allocated to it. The compiler will warn of variables that are employed before being initialized.

    		•
  • Q : What is Reduce Concurrency Reduce

    Reduce Concurrency: From a model-checking perspective, the searched state space consists of all possible thread-state combinations, which implies that the level of concurrency has the biggest impact on state space size. As a consequence, reducing conc

    		•
  • Q : What is Shortcut key Shortcut key : A

    Shortcut key: A key-press related with a component in a Graphical User Interface (abbreviated as GUI) which provides an alternative to choosing the component's operation with mouse.

    		•
  • Q : Explain the role XSL that dynamically

    Explain the role which XSL can play while dynamically generating HTML pages by a relational database?

    		•
  • Q : Illustrations of XML DTDs or schemas

    Give some illustrations of XML DTDs or schemas which you have?

    		•
  • Q : Types of buffering supported by UNIX

    Explain different types of buffering which is supported by the UNIX?

    		•
  • Q : What is Cascading if-else statement

    Cascading if-else statement: A form of if-else statement in which all else-part (apart from the last) comprises of a further nested if-else statement. Employed to overcome the trouble of textual drift frequently related with nested if statements.

    		•
  • Q : Define the term Statement terminator

    Define the term Statement terminator: The semicolon (;) is employed to point out the end of a statement.

    		•
  • Q : Main uses of Virtual memory Illustrate

    Illustrate the main uses of Virtual memory?

    		•
  • Q : What is Priority level Priority level :

    Priority level: Each and every thread has a priority level that point out to the scheduler where it must be placed in the pecking order for being run. The eligible un-blocked thread with a specific priority will always be run prior to an eligible thre

    		•