Write a c++ program (Binary Random Access Database) using a class that has array

Question

Write a c++ program (Binary Random Access Database) using a class that has array data members name, salary, year_hired. This program will

1) write the data for 10 records to a random access file

2) allow the user to output the name, salary, hire_date for a selected record

3) allow the user to change the name, salary, or hire_date for a selected record.

4) allow the user to add a record.

Note: The record number is the subscript of the array for name, salary, year_hired.

Must have ios::binary in the program

C++ PROGRAM MUST COMPILE AND MUST WRITE TO AND READ FROM A RANDOM ACCESS (BINARY) FILE

Thank You!

Explanation / Answer

#include <iostream>
#include <fstream>
#include <iomanip>

using namespace std;

void GetList(ifstream& fileIn, int hiredate[], int employee[], int salary[], int totalRecs);
void menuaction(int hiredate[], int employee[], int salary[], int totalRecs);
void DisplayList(int hiredate[], int employee[], int salary[], int totalRecs);
void sortarray(int hiredate[], int employee[], int salary[], int totalRecs);
void showarray(int hiredate[], int employee[], int salary[], int totalRec);
void UnOrdInsert(int hiredate[], int employee[], int salary[], int totalRecs);

const int MAX_LIST_SIZE = 25;

int main()
{
   // Array of list elements
   int hiredate[MAX_LIST_SIZE];
   int employee[MAX_LIST_SIZE];
   int salary[MAX_LIST_SIZE];
   int totalRecs = 0;

   // Set up file
   ifstream fileIn;
   fileIn.open("employeedata.txt"); //Open The File

   if (fileIn.fail()) // Test for file existence
   {
       cout << "Problem opening file";
       exit(-1);
   }

   ifstream theData;

   GetList(fileIn, hiredate, employee, salary, totalRecs);

   menuaction(hiredate, employee, salary, totalRecs);

}

// This function reads integers from a file and stores the values in
// an array. It returns the loaded array and the number of elements
// in the array

void GetList(ifstream& InFile, int hiredate[], int employee[], int salary[], int totalRecs)
{
   int i = 0;

   // Priming read

   InFile >> hiredate[i] >> employee[i] >> salary[i];

   while (!InFile.eof())
   {
       i++; // Add one to pointer
       // continuation reads
       InFile >> hiredate[i] >> employee[i] >> salary[i];
   }

   totalRecs = i;

}
// This Fuction is the Menu Action
void menuaction(int hiredate[], int employee[], int salary[], int totalRecs)
{

   int choice;

   do
   {
       cout << " Employee Data Menu ";
       cout << "1. List by hiredate ";
       cout << "2. List by employee number ";
       cout << "3. Add employee ";
       cout << "4. TERMINATE SESSION ";
       cout << "Enter your choice: ";

       cin >> choice;
       if (choice >= 1 && choice <= 3)
       {
           switch (choice)
           {
           case 1: DisplayList(hiredate, employee, salary, totalRecs);
               break;
           case 2: sortarray(hiredate, employee, salary, totalRecs);
               showarray(hiredate, employee, salary, totalRecs);
               break;
           case 3: UnOrdInsert(hiredate, employee, salary, totalRecs);
               DisplayList(hiredate, employee, salary, totalRecs);
               break;
    

           }

       }
       else if (choice != 4)
       {
           cout << "The valid choices are 1 through 4. ";
           cout << "Please try again. ";
       }
   } while (choice != 4);

}
//This function writes a list to console output
void DisplayList(int hiredate[], int employee[], int salary[], int totalRecs)
{
   for (int i = 0; i < totalRecs; i++)

       cout << hiredate[i] << " " << employee[i] << " " << salary[i] << " " << endl;
   cout << endl;
}
// This functions Lists the employees by number using sorting
void sortarray(int hiredate[], int employee[], int salary[], int totalRecs)
{
   int temp, temp2, temp3, end;
   for (end = totalRecs - 1; end >= 0; end--)
   {
       for (int i = 0; i < end; i++)
       {
           if (employee[i] > employee[i + 1])
           {
               temp = employee[i];
               temp2 = hiredate[i];
               temp3 = salary[i];
               employee[i] = employee[i + 1];
               hiredate[i] = hiredate[i + 1];
               salary[i] = salary[i + 1];
               employee[i + 1] = temp;
               hiredate[i + 1] = temp2;
               salary[i + 1] = temp3;
           }
       }
   }
}
void showarray(int hiredate[], int employee[], int salary[], int totalRecs)
{
   for (int i = 0; i < totalRecs; i++)
       cout << hiredate[i] << " " << employee[i] << " " << salary[i] << endl;
}

// This function receives an integer, an array containing
// an unordered list, and the size of the list. It inserts
// a new integer item at the end of the list
void UnOrdInsert(int hiredate[], int employee[], int salary[], int totalRecs)
{
   int newint, newint2, newint3;
   totalRecs++; // Increment size of list

   cout << "Insert New Employee HIREDATE:" << endl;
   cin >> newint;
       hiredate[totalRecs] = newint;
   cout << "Insert New Employee ID NUMBER:" << endl;
   cin >> newint2;
       employee[totalRecs] = newint2;
   cout << "Insert New Employee's Salary:" << endl;
   cin >> newint3;
       salary[totalRecs] = newint3;

}

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