--%>
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 : State the term Standard Generalized

    State the term Standard Generalized Markup Language?

    		•
  • Q : C programming assignment help S trings,

    Strings, Pointers, Arrays, Structures, and File I/O in C In this lab you will develop a few programs that will give you some practice with pointers, arrays, str

    		•
  • Q : What is an Interrupt Interrupt : This

    Interrupt: This is an asynchronous message sent to a process or thread which interrupts what it is at present doing. This generally outcomes in an InterruptedException object being received by an interrupted thread. Waiting for an int

    		•
  • Q : What is a Micro-chip Micro-chip : It is

    Micro-chip: It is a small electronic device employed to build computers and other electronic equipment. The chips are generally employed to supply the memory and processing components of the computer.

    		•
  • Q : Write a program that initializes an

    Write a program that initializes an integer array a[20] with values {0, 1, 2, 3, ...18, 19 - once each} then scrambles them up and prints the values in random order. For example: 19 2 3 8 11 1 4 17 7 15 9 0 16 12 18 13 5 6 10 14    

    		•
  • Q : Explain Operating system Operating

    Operating system: The operating system permits a computer's hardware devices to be accessed by the programs. For example, it permits data to be managed on a computer's disks in the form of a file system and it delivers the co-ordinate positions of a m

    		•
  • Q : Pointer in C What is pointer? What

    What is pointer? What significance of pointer in C programming languages?

    		•
  • Q : Define Unicode Unicode : It is a 16-bit

    Unicode: It is a 16-bit character set designed to make it simpler to exchange and exhibit information which makes use of a broad range of dissimilar languages and symbols.

    		•
  • Q : Define Object serialization Object

    Object serialization: The writing of an object's contents in such a manner that its state can be restored, either at a later time, or in a different procedure. This can be employed to store objects between runs of a program, or to transfer or shifts o

    		•
  • Q : Define the term Static type Define the

    Define the term Static type: It is the static type of an object is the declared type of the variable employed to refer to it.

    		•