/* Filename:  EmployeeSimple.cpp

Author:  Br. David Carlson

Date:  January 24, 1998

Last Modified:  September 24, 2017

This file implements the functions ReadEmployee, PrintEmployee, and EmpCompare that are prototyped
in EmployeeSimple.h.
*/


#include "EmployeeSimple.h"


/* Given:  Nothing.
   Task:   To read from the keyboard data for one employee.
   Return: Employee   A structure containing the data just read.
*/
void ReadEmployee(EmployeeSimpleType & Employee)
    {
    cout << "Enter employee's last name: ";
    cin.getline(Employee.LastName, NameMax);  // NameMax is max characters in string plus 1 (for NULL) marking end of string.

    cout << "Enter employee's first name: ";
    cin.getline(Employee.FirstName, NameMax);

    cout << "Enter employee's ID number: ";
    cin >> Employee.ID;

    cout << "Enter employee's wage rate: ";
    cin >> Employee.WageRate;

    cin.get();  // Since a number was read last, the newline has not been read in. This will read it in.
    // If we left the newline in the input buffer, if a string is read next, it would get the empty string.
    }


/* Given:  Employee   A structure containing info on one employee.
  Task:   To print the data from Employee on the screen.
  Return: Nothing.
*/
void PrintEmployee(const EmployeeSimpleType & Employee)
    {
    cout << "Name:"
        << setw(17) << Employee.LastName
        << setw(17) << Employee.FirstName
        << setw(6) << "ID:"
        << setw(8) << Employee.ID
        << setw(13) << "Wage rate:"
        << setw(10) << Employee.WageRate << endl;
     }


/* Given:   First   An employee record.
            Second  Another employee record.
   Task:    To decide if, based on last name then first name, First
            is less than, equal to, or greater than Second.
   Return:  In the function name return:
            -1 if First < Second
            0  if First == Seond
            1  if First > Second
*/
int EmpCompare(const EmployeeSimpleType & First, const EmployeeSimpleType & Second)
   {
    int Value;

    Value = strcmp(First.LastName, Second.LastName);
    if (Value < 0)
        return -1;
    if (Value > 0)
        return 1;

    // If reach this line, LastNames are the same.
    Value = strcmp(First.FirstName, Second.FirstName);
    if (Value < 0)
        return -1;
    if (Value > 0)
        return 1;

    // If reach this line, both first and last names are same.
    return 0;
   }