--%>
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 : What is no-arg constructor no-arg

    no-arg constructor: It is a constructor which takes no arguments. By default, each and every class without an explicit constructor has a default no-arg constructor with the public access. Its role is entirely to invoke the no-arg constructor of the in

    		•
  • Q : Define Modem Modem : It is a

    Modem: It is a modulator-demodulator. A hardware device employed to connect a digital computer to an analogue telephone network by making analogue signals into digital signals, and vice-versa.

    		•
  • Q : Updating the Status of an Order in SQL

    Build a procedure named STATUS_SHIP_SP which permits a company to employee in the Shipping Department to update the status of an order to add up shipping information. The BB_BASKETSTATUS table maintains a list of events for each order and hence a shopper can see the c

    		•
  • Q : Define Number of Interleavings Number

    Number of Interleavings: Besides the raw number of threads, the state space is affected by the number of potential interleavings of these threads. While there exist automated techniques (partial-order reduction) to reduce these interleavings, most mod

    		•
  • Q : Define the term Security policy Define

    Define the term Security policy: It is a policy employed to limit access by an applet to the resources of the host system.

    		•
  • Q : Explain State State : The objects are

    State: The objects are said to possess state. The present state of an object is symbolized by the joint values of its attributes. Protecting the state of an object from unsuitable inspection or modification is a significant aspect of class design and

    		•
  • Q : Edit things in Moodle Normal 0 false

    Normal 0 false false

  • Q : Explain String String: It is an

    String: It is an instance of the String class. A string comprises of zero or more Unicode characters, and they are not mutable or immutable, once formed. The literal string is written between a pair of string delimiters ("), as:

    Q : Explain Abstraction Abstraction : It is

    Abstraction: It is a simplified symbolization of something which is potentially quite complex. It is frequently not essential to know the precise details of how something works, is symbolized or is implemented, since we can still make use of it in its

    		•
  • Q : Explain a way to install JAVA S60 device

    What should I do when installation fails whilst trying to install a Java™ Verified application to a certain S60 device?

    		•