Chapter 7, Problem 30RQE

Explanation of Solution

Class Object:

• Objects are the instance of class, which contains the value to the variables declared in class and the member function work on these class objects.
• Class objects are passed as parameter or argument to the functions by reference or by value.
• With the use of class object, a public member function is accessed by the dot operator.

Example:

Consider an example of class object is as follows:

// Main function

int main ()

{

//create an object for the class

Sample x;

//call the function

test (x);

display (x);

}

/*definition of “test” function and pass the object as a reference*/

void test( Sample &s...