54 lines
2.3 KiB
C++
54 lines
2.3 KiB
C++
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// fig09_35.cpp
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// static data member tracking the number of objects of a class.
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#include <fmt/format.h>
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#include <iostream>
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#include "Employee.h" // Employee class definition
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int main() {
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// no objects exist; use class name and scope resolution
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// operator to access static member function getCount
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std::cout << fmt::format("Initial employee count: {}\n",
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Employee::getCount()); // use class name
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// the following scope creates and destroys
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// Employee objects before main terminates
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{
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const Employee e1{"Susan", "Baker"};
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const Employee e2{"Robert", "Jones"};
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// two objects exist; call static member function getCount again
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// using the class name and the scope resolution operator
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std::cout << fmt::format(
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"Employee count after creating objects: {}\n\n",
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Employee::getCount());
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std::cout << fmt::format("Employee 1: {} {}\nEmployee 2: {} {}\n\n",
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e1.getFirstName(), e1.getLastName(),
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e2.getFirstName(), e2.getLastName());
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}
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// no objects exist, so call static member function getCount again
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// using the class name and the scope resolution operator
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std::cout << fmt::format(
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"Employee count after objects are deleted: {}\n",
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Employee::getCount());
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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