please write the program in c++ and read the instructions carefully Here is the

Question

please write the program in c++ and read the instructions carefully

Here is the project 4 that was previously done

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

using namespace std;

//Prototype functions
double calcWage();
void getEmployeeInfor();
void printWages();
void printTable();
void loop();

//Defining terms for the program.
int id,result;
double payRate, hours, wage;
ofstream outputFile;
//ifstream inputFile;
string file,strings;

int main()
{
//Initally get the filename to save the final output to this file
cout << "Please enter the name of the file you wish to save to: ";
cin >> file;
outputFile.open(file.c_str()); //open the file

//Get employee information
getEmployeeInfor();
//Calculate the total wage
wage = calcWage();
//Prints the Table to the outputFile
printTable();
//Prints the wages to the output File
printWages();
//Ask if more informations wants to be added/ calculated
loop();
return 0;
}

//Function for asking user for Employee Id, pay rate, and the hours worked
void getEmployeeInfor()

{
cout << "Please enter your employee id, payrate, and hours worked: " << endl;
cin >> id >> payRate >> hours;

//Loop to check for valid numbers.
while ((id < 0) || payRate < 0 || hours < 0)
{
cout << "Please enter valid numbers (Positive numbers only): ";
cin >> id >> payRate >> hours;
}
}

//Function for calculating the Wage
double calcWage()
{
double wages;
return wages = payRate * hours;
}

//Function for printing information to the outputFile
void printWages()
{
outputFile << setw(8) << id << setprecision(2) << fixed << setw (16) << payRate
<< setprecision(2) << fixed << setw (12) << hours
<< setprecision(2) << fixed << setw (18) << wage << endl;
}

//Function to print table to the outputFile
void printTable()

{
outputFile << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"
<< setw(18) << "Wage"<<endl;
outputFile << "------------------------------------------------------ ";
}

//Function that asks the user if the process wants to be repeated
void loop()
{  
char answer;
cout << "Do you want to calculate another employe's gross wage? (y/n): ";
cin >> answer;
if (answer == 'y'|| answer == 'Y')
{
getEmployeeInfor(); // gets employee information
wage = calcWage(); // calculates wage
printWages(); // prints wage to the outputfile
//calls loop function again to get an Y or N;
loop();
}
else
{
//Close the outputfile and display final message
outputFile.close();
cout << "The result is reported to the file " << file << endl;
}
}

Objectives To provide students with the experience of using arrays, functions and sorting algorithms to solve a problem » designing and describing algorithms using structure chart Problems Modify Project 4 (Payroll System) so that employees' information can be sorted by ID, hourly rate, hours worked or wage. You are asked to use a menu to provide these services for the users The menu might look like this Menu 1. Display employees' information to screen 2. Display emplovee' s information to screen according the order of ID 3. Display employee's information to screen according the 4. Display employee' s information to screen according the 5. Display employee' s information to screen according the 6. Quit the system order of hourly rate order of hours order of wage worked Before the menu is shown, you need to build employee database first as you did in Project 4. Then ask the user how to show employees' information Hint] Follow the way to sort employee information in Lab 8 Input Employee's id, hourly rate and hours worked A user's option for displaying data (a number from 1 6) . Output . Employee's information including ID, hourly rate, hours worked and calculated gross wage

Explanation / Answer

//header files

#include <iostream>

#include <fstream>

#include <string>

#include <iomanip>

using namespace std;

//function prototypes

void printTable();

void printWages();

void Display_Info();    //to display employee information on screen

void Display_order_ID();    //to display employee information according to order of ID

void Display_order_Rate(); //to display employee information according to order of hourly rate

void Display_order_Worked();    //to display employee information according to order of hours worked

void Display_order_Wage();      //to display employee information according to order of wage

struct Employee{

    double rate, hours, wage;

    int id;

}emp[100]; //restricting numner of employees in database to 100 as limit is not described

ofstream outputFile;

ifstream inputFile;

int counter = 0; //to keep track of how many employees have been input

int main(){

    //Initally get the filename to save the final output to this file

    string file;

    cout << "Please enter the name of the file you wish to save to: ";

    cin >> file;

    outputFile.open(file.c_str()); //open the file

    cout<<endl;

    cout << setfill(' ') << setw(50);

    cout << "-- XXXXXX Payroll System --" ;

    cout << endl;

    cout << setfill(' ') << setw(47);

    cout << "Build Employee Database";

    cout << endl << endl;

    char add_entry; //loop control variable for input of more that one employee

    int i = 0;     

    do{

        cout << " Enter an employee's information by order of ID number, rate, hours: ";

        cin >> emp[i].id >> emp[i].rate >> emp[i].hours;

        //Checking for valid input

        while ((emp[i].id < 0) || emp[i].rate < 0 || emp[i].hours < 0){

            cout << "Please enter valid numbers (Positive numbers only): ";

            cin >> emp[i].id >> emp[i].rate >> emp[i].hours;

        }

        emp[i].wage = emp[i].rate*emp[i].hours;

        i++;

        counter++;

        cout << "Do you want to calculate another employee's gross wage? ";

        cin >> add_entry;

    }while(add_entry=='y');

    //calling functions to print employee data in output file

    printTable();

    printWages();

    cout << " The result was reported to the file "" << file << "" ";

    // Code section for the various outputs

    int choice;

    cout<<endl;

    do{

        cout << setfill(' ') << setw(50);

        cout << "-- XXXXXX Payroll System --" ;

        cout << endl;

        cout << setfill(' ') << setw(47);

        cout << "Display Employee Data";

        cout << endl << endl;

        cout << setfill(' ') << setw(15) << "1. Display employees' information to screen ";

        cout << setfill(' ') << setw(15) << "2. Display employees' information to screen according to the order of ID ";

        cout << setfill(' ') << setw(15) << "3. Display employees' information to screen according to the order of hourly rate ";

        cout << setfill(' ') << setw(15) << "4. Display employees' information to screen according to the order of hours worked ";

        cout << setfill(' ') << setw(15) << "5. Display employees' information to screen according to the order of wage ";

        cout << setfill(' ') << setw(15) << "6. Quit the system ";     

        cout << setfill(' ') << setw(1) << "Enter your option --> ";

        cin >> choice;

        switch(choice){

            case 1:

                Display_Info();

                break;

            case 2:

                Display_order_ID();

                break;

            case 3:

                Display_order_Rate();

                break;

            case 4:

                Display_order_Worked();

                break;

            case 5:

                Display_order_Wage();

                break;

            case 6:

                cout << "Thank you for using XXXXXX Payroll System!";

                break;

            default:

                cout<<"Invalid Input! Try Again";

                break;

        }

    }while(choice!=6);

    outputFile.close(); //closing output file after adding information

    return 0;

}

void printTable(){

    outputFile << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

             << setw(18) << "Wage"<<endl;

outputFile << "------------------------------------------------------ ";

}

void printWages(){

    for (int i=0;i<counter;i++){

         outputFile << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

}

void Display_Info(){

    cout << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

         << setw(18) << "Wage"<<endl;

    for(int i=0;i<counter;i++){

        cout << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

    cout<<endl;

}

void Display_order_ID(){

    //ordering items using bubble sort on the ID field

    for(int i=0; i<counter; i++){

        for(int j=0; j<counter-i-1;j++){

            if(emp[j].id > emp[j+1].id){

                Employee temp = emp[j];

                emp[j] = emp[j+1];

                emp[j+1] = temp;

            }

        }

    }

    cout << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

         << setw(18) << "Wage"<<endl;

    for(int i=0;i<counter;i++){

        cout << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

    cout<<endl;

}

void Display_order_Rate(){

    //ordering items using bubble sort on the rate field

    for(int i=0; i<counter; i++){

        for(int j=0; j<counter-i-1;j++){

            if(emp[j].rate > emp[j+1].rate){

                Employee temp = emp[j];

                emp[j] = emp[j+1];

                emp[j+1] = temp;

            }

        }

    }

    cout << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

         << setw(18) << "Wage"<<endl;

    for(int i=0;i<counter;i++){

        cout << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

    cout<<endl;

}

void Display_order_Worked(){

    //ordering items using bubble sort on the hours field

    for(int i=0; i<counter; i++){

        for(int j=0; j<counter-i-1;j++){

            if(emp[j].hours > emp[j+1].hours){

                Employee temp = emp[j];

                emp[j] = emp[j+1];

                emp[j+1] = temp;

            }

        }

    }

    cout << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

         << setw(18) << "Wage"<<endl;

    for(int i=0;i<counter;i++){

        cout << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

    cout<<endl;

}

void Display_order_Wage(){

    //ordering items using bubble sort on the wage field

    for(int i=0; i<counter; i++){

        for(int j=0; j<counter-i-1;j++){

            if(emp[j].wage > emp[j+1].wage){

                Employee temp = emp[j];

                emp[j] = emp[j+1];

                emp[j+1] = temp;

            }

        }

    }

    cout << setw(8) << "ID" << setw (16) << "HourlyRate" << setw(12) << "Hours"

         << setw(18) << "Wage"<<endl;

    for(int i=0;i<counter;i++){

        cout << setw(8) << emp[i].id   << setprecision(1) << fixed << setw (16) << emp[i].rate

             << setprecision(1) << fixed << setw (12) << emp[i].hours

             << setprecision(1) << fixed << setw (18) << emp[i].wage << endl;

    }

    cout<<endl;

}

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