Chapter 14, Problem 20RQE

Programming steps to initialize a static member function:

The necessary points to remember to declare a class member function as static is as follows:

• In a class, the static member function is defined by placing a “static” keyword in the function prototype.
• The static member function is defined either inside the class or outside the class.
• Defining the static member function outside the class is done with the help of scope resolution operator (::).
• The static member function can be accessed using the class name and the scope resolution operator (::).

The below statement is used to call the static member function:

Numbers::showTotal ();

Here, the “Numbers” is the class name and the “showTotal” is the function name.

• Non-static data member in the class are not accessed by the static member function.

Syntax:

The syntax of the static member function is as follows:

static return_type function_name (parameter);

Example Program:

Consider the example of static member variable declaration is as follows:

//Header file

#include<iostream>

using namespace std;

//class definition

class sample

{

//declaration of instance variable

int c;

>&#...