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C & C++ Multimedia Cyber Classroom
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C and C++ Multimedia Cyber Classroom (Prentice Hall) (1998).iso
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src
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fig07_09.jar
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Ch07
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Fig07_09
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Employ1.cpp
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C/C++ Source or Header
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1997-10-20
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2KB
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61 lines
// Fig. 7.9: employ1.cpp
// Member function definitions for class Employee
#include <iostream.h>
#include <string.h>
#include <assert.h>
#include "employ1.h"
// Initialize the static data member
int Employee::count = 0;
// Define the static member function that
// returns the number of employee objects instantiated.
int Employee::getCount() { return count; }
// Constructor dynamically allocates space for the
// first and last name and uses strcpy to copy
// the first and last names into the object
Employee::Employee( const char *first, const char *last )
{
firstName = new char[ strlen( first ) + 1 ];
assert( firstName != 0 ); // ensure memory allocated
strcpy( firstName, first );
lastName = new char[ strlen( last ) + 1 ];
assert( lastName != 0 ); // ensure memory allocated
strcpy( lastName, last );
++count; // increment static count of employees
cout << "Employee constructor for " << firstName
<< ' ' << lastName << " called." << endl;
}
// Destructor deallocates dynamically allocated memory
Employee::~Employee()
{
cout << "~Employee() called for " << firstName
<< ' ' << lastName << endl;
delete firstName; // recapture memory
delete lastName; // recapture memory
--count; // decrement static count of employees
}
// Return first name of employee
const char *Employee::getFirstName() const
{
// Const before return type prevents client modifying
// private data. Client should copy returned string before
// destructor deletes storage to prevent undefined pointer.
return firstName;
}
// Return last name of employee
const char *Employee::getLastName() const
{
// Const before return type prevents client modifying
// private data. Client should copy returned string before
// destructor deletes storage to prevent undefined pointer.
return lastName;
}