--%>
Assignment Help - homework help

"Const" qualifier for pointers and member function

In C++ an arguments to a function can be declared as constant as shown below:

Int strlen (constant char * p);

Int length (constant string & s);

The qualifier const tells the compiler that the function should not modify the arguments. The compiler will produce error when this situation is violated. This type of declaration is significant only when we pass arguments by reference or pointer.

Constant member functions: If a member function does not alter any data in the class, than we have may declare it as a constant member function as follows:

Void mul (int. Int) constant;

Double get _ balance constant;

The qualifier constant is appended to the function proto types (in both declaration and definition). The compiler is as a constant will generate an error message if such functions try to alter the data values.

 

 

 

   Related Questions in Programming Languages

  • Q : Define Loop variable Loop variable : A

    Loop variable: A variable employed to control the operation of a loop, like a for loop. Usually, a loop variable will be provided an initial value and it is then incremented after each and every iteration till it passes or reaches a terminating value.

    		•
  • Q : What are the tools require writing

    What are the tools require writing XHTML documents?

    		•
  • Q : What is Complement operator Complement

    Complement operator: The complement operator, ~, is employed to invert the value of each bit in the binary pattern. For illustration, the complement of 1010010 is 0101101.

    		•
  • Q : Perform Exception Handling with

    On occasion, some of Brewbean’s customers mistakenly leave an item out of a basket already checked out, therefore they create a new basket containing the missing items. Though they request that the baskets be combined and hence they are not charged extra shippin

    		•
  • Q : Define the term Field Define the term

    Define the term Field: Variables stated within a class or interface, exterior of the methods. The fields are members of a class.

    		•
  • Q : Networking Homework Assignment : A

    Homework Assignment : A Barbershop Problem Due: November 20, 2012 In this assignment, you are asked to write a multithreading problem to simulate the barbershop problem, which is a classical synchronization problem. The problem is taken from William Stallings's Operating Systems: Internals and D

    		•
  • Q : Describe Method Method : The portion of

    Method: The portion of a class definition which implements some of the behavior of objects of the class. The body of the method includes declarations of local variables and statements to execute the behavior. The method receives input through its argu

    		•
  • Q : Define the term Interface inheritance

    Interface inheritance: Whenever a class implements an interface, the interface inheritance relationship exists among them. The class inherits no implementation from interface, just method signatures and static variables. It is as well possible for one

    		•
  • Q : Meaning of active and passive objects

    Illustrate in brief the meaning of active and passive objects?

    		•
  • Q : What is pipe What is meant by the term

    What is meant by the term pipe?

    		•