Question

Write a C++ menu driven Payroll program. Must be user friendly.  

Menu
1. Check data file  
2. Read Data file
3. Process payroll for one employee
4. Process payroll for all employees
5. Print out to a text or an HTML file
6. Exit

You must use the following Payroll classes, structures, pointers, arrays, enum, vector, recursive, advance file I/O, STL, iterators and containers. The program to process an input file below to calculate tax of 28% and output it to a text or an HTML file with tables. Heading First name, Last Name, Full name, Salary, Tax, Net PayWrite a C++ menu driven lottery picker program.

data.txt
Name hours rate of pay
David Shin 35 55.75
Al Smith 21 33.88
Peter Becker 48   25.22
Johnny Tiger 15 27.50

Answer 1

1) I have used STL method stof for converting string to float.

2) Used pointers to process payroll

3) Employee vector is used to store all data

4) Input is read from data.txt file which is the same syntax as shown above, Will also provide sample screenshot of input file.

4) Output is written in text file , whose name is provided by the user, also the file extension can be html too.

5) Read comments in code they will explain purpose of each function

HERE IS THE PROGRAM IN C++

#include<bits/stdc++.h>
using namespace std;

class employee
{
   public:
       string firstName;
       string lastName;
       string fullName;
       float salary;
       float hours;
       float rateOfPay;
       float tax;
       float net;
       employee()
       {
           firstName=lastName=fullName="";
           salary=tax=net=-1.0;
       }
};
vector<employee> E;
//Check Data file
void checkDataFile()
{
   ifstream in("data.txt");
   if(!in)
       cout<<"DATA FILE NOT AVAILABLE"<<endl;
   else
       cout<<"DATA FILE IS AVAILABLE"<<endl;
   in.close();
}
//reading the data file
void readDataFile()
{
ifstream in("data.txt");
if(!in)   
{
    cout<<"ERROR WHILE READING FILE\n";
    return;
   }   
string data;
employee temp;
while (in >> data) {
temp.firstName=data;
if(in>>data)
temp.lastName=data;
if(in>>data)
temp.hours=stof(data);;
if(in>>data)
temp.rateOfPay=stof(data);;
E.push_back(temp);
}
cout<<"DATA READ FROM FILE"<<endl;
cout<<"First Name   "<<"Last Name   "<<"Hours   "<<"Rate Per Hour"<<endl;
for(int i=0;i<E.size();++i)
{
   cout<<E[i].firstName<<"       "<<E[i].lastName<<"       "<<E[i].hours<<"   "<<E[i].rateOfPay<<endl;
   }
in.close();
}
//Process payroll (USING POINTERS TO PROCESS PAYROLL
void payroll(employee *e)
{

   e->salary=e->hours*e->rateOfPay;
   e->tax= e->salary -(e->salary*0.28);
   e->net=e->salary-e->tax;
  
}
//Process payroll for one employee
void forOne()
{
   string fname;
   string lname;
   cout<<"ENTER THE FIRST NAME OF EMPLOYEE:";
   cin>>fname;
   cout<<"ENTER THE LAST NAME OF EMPLOYEE:";
   cin>>lname;
   for(int i=0;i<E.size();++i)
   {
       if(E[i].firstName==fname && E[i].lastName==lname)
           {
           payroll(&E[i]);  
           }
   }
}
//print on console
void printConsole()
{
  
    cout<<"First Name   "<<"Last Name   "<<"Full Name   "<<"Salary   "<<"Tax    "<<"Net Pay"<<endl;
   for(int i=0;i<E.size();++i)
   {
  
       cout<<E[i].firstName<<"       "<<E[i].lastName<<"       "<<E[i].firstName<<"   "<<E[i].lastName<<" "<<E[i].salary<<"   ";
       cout<<E[i].tax<<"   "<<E[i].net<<endl;
   }
}

//Process payroll for all employees
void forAll()
{
       for(int i=0;i<E.size();++i)
   {
           payroll(&E[i]);  
   }
   printConsole();
}

//print out a text file
void print()
{
   string fileName;
    cout<<"ENTER THE NAME OF FILE WITH EXTENSION: ";
    cin>>fileName;
    ofstream out(fileName);
    out<<"First Name   "<<"Last Name   "<<"Full Name   "<<"Salary   "<<"Tax       "<<"Net Pay"<<endl;
   for(int i=0;i<E.size();++i)
   {
   if(E[i].net!=-1.0)
   {
       out<<E[i].firstName<<"       "<<E[i].lastName<<"       "<<E[i].firstName<<"   "<<E[i].lastName<<"       "<<E[i].salary<<"   ";
       out<<E[i].tax<<"   "<<E[i].net<<endl;
   }
   }
   out.close();
}

int main()
{
  
   int option=0;
   do
   {
       cout<<"1) Check Data File"<<endl;
       cout<<"2) Read Data File"<<endl;
       cout<<"3) Process payroll for one employee "<<endl;
       cout<<"4) Process payroll for all employees"<<endl;
       cout<<"5) Print out to a text or an HTML file"<<endl;
       cout<<"6) Exit"<<endl;
       cout<<"Enter a valid choice:";
       cin>>option;
       switch(option)
       {
           case 1: checkDataFile();
               break;
           case 2: readDataFile();
               break;
           case 3: forOne();
               break;
           case 4: forAll();
               break;
           case 5: print();
               break;
           case 6:
               break;
           default:
               cout<<"ENTER A VALID CHOICE"<<endl;
       }
   }while(option!=6);
   return 0;
  
}

OUTPUT SCREENSHOT

INPUT FILE SCREENSHOT

CODE SCREENSHOT