--%>
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 : Explain Magic number Magic number : It

    Magic number: It is a constant value with significance within a specific context. For example, the value 12 could mean numerous different things - the number of hrs you have worked today, the number of dollars you are payable by a friend, and so forth

    		•
  • Q : Explain the way to write the opening

    Explain the way to write the opening tag of an XHTML element.

    		•
  • Q : Define Object-oriented language

    Object-oriented language: Programming languages like Java and C++ which permit the solution to a trouble to be stated in terms of objects that belong to the classes.

    		•
  • Q : Explain Two dimensional array Two

    Two dimensional array: A two dimensional array is a continuous memory location having similar kind of data arranged in row and column format (such as a matrix structure). D

    		•
  • Q : Define TCP endpoint TCP endpoint : It

    TCP endpoint: It is the combination of an IP address and Transmission Control Protocol (abbreviated as TCP) port number.

    		•
  • Q : Explain Edit-compile-run cycle

    Edit-compile-run cycle: A common portion of the program development procedure. The source file is made initially and compiled. The syntax errors should be corrected in the editor before compiling it again. Once the program has been productively compil

    		•
  • Q : What is Variable Variable : It is the

    Variable: It is the memory block of specific size where value can be stored and modified throughout program execution. Example: int x, float y, float amount, char c;

    		•
  • Q : What is Memory leak Memory leak : It is

    Memory leak: It is a situation in which memory which is no longer being employed has not been returned to the pool of free memory. The garbage collector is designed to return unreferenced objects to the free memory pool in order to shun memory leaks.<

    		•
  • Q : Explain the term Latest XHTML

    Explain the term Latest XHTML Specification?

    		•
  • Q : Static and dynamic modeling in

    Illustrate in brief the term static and dynamic modeling in programming?

    		•