--%>
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 are good examples of element

    What are good examples of element attributes?

    		•
  • Q : Explain the CPU scheduling decisions

    Explain the CPU scheduling decisions.

    		•
  • Q : Write a program that prints out 20

    Write a program that prints out 20 random cards form a standard deck of 52 cards. Make sure the program prints out different sets of cards from one run to the next.

    		•
  • Q : What is Virtual desktop Virtual desktop

    Virtual desktop: The name employed to explain a user's graphical working area in a window manager. The name arises in the early days of graphical user interfaces whenever it was thought that such would lead to `paperless offices'. This was anticipated

    		•
  • Q : What is an Iterator pattern Iterator

    Iterator pattern: It is a common pattern in which the contents of a collection are iterated above in order. The Iterator pattern frees a client of data from requiring details of how the data is stored. This pattern is maintained by the Iterator and Li

    		•
  • Q : State Space Reduction in Java PathFinder

    State Space Reduction: JPF is a so-called explicit-state model checker, as it enumerates all visited states, and therefore suffers from the state explosion problem inherent in analyzing large programs. It also contains garbage collection, because a ty

    		•
  • Q : How you explain binding in WSDL How you

    How you explain binding in WSDL?

    		•
  • Q : Long lock in the tibco iProcess

    Describe the term Long lock in the tibco iProcess in brief.

    		•
  • Q : What is Actual argument Actual argument

    Actual argument: The value of an argument enacted to a method from exterior to the method. Whenever a method is called, the real argument values are copied into analogous formal arguments. The kinds of the actual arguments should be compatible with th

    		•
  • Q : Mission Critical Systems or a real-time

    Determine the important aspect of Mission Critical Systems or a real-time system.

    		•