/* Filename:  recfind.cpp

   Author:  Br. David Carlson

   Date:  January 24, 1998

   Last Revised:  November 21, 2001

   This program reads from the keyboard the data for a series of
   employees. (This data consists of each employee's first and last
   name, ID number, and wage rate.)  The user is then allowed to
   repeatedly look up employee records by entering the user's last
   name and first name, with CTRL z entered to end lookups.
   (Substitute CTRL d in Linux, of course.)

   Tested with:
      Microsoft Visual C++ 6.0
      Microsoft Visual C++ .NET
      g++ under Linux
*/

#include "emparray.h"


/* Given:   Nothing.
   Task:    To prompt the user to enter the last and first name of an
            employee.
   Return:  Employee   Record containing these names, other fields unused.
            In the function name, return FailFlag if CTRL z was entered,
            OKFlag otherwise.
*/
int GetTarget(EmployeeType & Employee)
   {
   // Change to CTRL d for Linux:
   cout << endl
      << "Enter last name of employee to find (CTRL z to quit): ";
   cin >> Employee.LastName;
   if (cin.fail())
      return FailFlag;
   cout << "Enter first name of this employee: ";
   cin >> Employee.FirstName;
   if (cin.fail())
      return FailFlag;

   return OKFlag;
   }


/* Given:   EmpArray  Array of employee records, already in order.
            EmpCount  Number of employee records in EmpArray.
   Task:    To allow the user to do repeated lookups for the data on
            an employee by entering the person's name.
   Return:  Nothing.
*/
void Lookups(EmpArrayType EmpArray, int EmpCount)
   {
   EmployeeType Employee;
   int Flag, Result;

   cout << endl << endl;
   Flag = GetTarget(Employee);

   while (Flag == OKFlag)
      {
      Result = BinarySearch(EmpArray, 0, EmpCount - 1, Employee);
      if (Result == -1)
         cout << "Could not find this employee" << endl;
      else
         PrintEmployee(EmpArray[Result]);
      Flag = GetTarget(Employee);
      }

   cout << endl << endl;
   }


int main(void)
   {
   EmpArrayType EmpArray;
   int Flag, EmpCount;

   Flag = LoadArray(EmpArray, EmpCount);

   if (Flag == TooMuchDataFlag)
      cout << endl << endl << "The data would not fit in the array"
         << endl;
   else
      Lookups(EmpArray, EmpCount);

   return 0;
   }