Payroll Management System

#include<Windows.h>
#include <iostream>
#include <fstream>
#include <process.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <conio.h>
#include <time.h>
#include <unistd.h>

#include <dos.h>

using namespace std;

void gotoxy(int x, int y)
{
 COORD c = { x, y };
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), c);
}


class LINES
{
public:
 void LINE_HOR(int, int, int, char);
 void LINE_VER(int, int, int, char);
 void BOX(int, int, int, int, char);
 void CLEARUP(void);
 void CLEARDOWN(void);
};



class MENU
{
public:
 void MAIN_MENU(void);
private:
 void EDIT_MENU(void);
 void INTRODUCTION(void);
};



class EMPLOYEE
{
public:
 void NEW_EMPLOYEE(void);
 void MODIFICATION(void);
 void DELETION(void);
 void DISPLAY(void);
 void LIST(void);
 void SALARY_SLIP(void);
private:
 void ADD_RECORD(int, char[], char[], char[], int, int, int, char[], char, char, char, float, float);
 void MODIFY_RECORD(int, char[], char[], char[], char[], char, char, char, float, float);
 void DELETE_RECORD(int);
 int  LASTCODE(void);
 int  CODEFOUND(int);
 int  RECORDNO(int);
 int  FOUND_CODE(int);
 void DISPLAY_RECORD(int);
 int  VALID_DATE(int, int, int);

 int   code, dd, mm, yy;
 char  name[26], address[31], phone[10], desig[16];
 char  grade, house, convense;
 float loan, basic;
};



void MENU::MAIN_MENU(void)
{
 char ch;
 LINES L;
 L.CLEARUP();
 while (1)
 {
  system("cls");
  gotoxy(14, 3);
  cout << "     C++ Project for Payroll Management System";
  L.BOX(25, 7, 57, 9, 218);
  L.BOX(10, 5, 71, 21, 218);
  L.BOX(11, 6, 70, 20, 219);
  gotoxy(29, 8);
  cout << "PAYROLL MANAGEMENT SYSTEM";
  gotoxy(30, 11);
  cout << "1: NEW EMPLOYEE";
  gotoxy(30, 12);
  cout << "2: DISPLAY EMPLOYEE";
  gotoxy(30, 13);
  cout << "3: LIST OF EMPLOYEES";
  gotoxy(30, 14);
  cout << "4: SALARY SLIP";
  gotoxy(30, 15);
  cout << "5: EDIT";
  gotoxy(30, 16);
  cout << "0: QUIT";
  gotoxy(30, 18);
  cout << "ENTER YOUR CHOICE :";
  gotoxy(5, 23);

  ch = _getch();
  if (ch == 27 || ch == '0')
   break;
  else if (ch == '1')
  {
   EMPLOYEE E;
   E.NEW_EMPLOYEE();
  }
  else if (ch == '2')
  {
   EMPLOYEE E;
   E.DISPLAY();
  }
  else if (ch == '3')
  {
   EMPLOYEE E;
   E.LIST();
  }
  else if (ch == '4')
  {
   EMPLOYEE E;
   E.SALARY_SLIP();
  }
  else if (ch == '5')
   EDIT_MENU();
 }
 L.CLEARUP();
}



void MENU::EDIT_MENU(void)
{
 char ch;
 LINES L;
 L.CLEARDOWN();
 while (1)
 {
  system("cls");
  L.BOX(28, 8, 49, 10, 218);
  L.BOX(10, 5, 71, 21, 218);
  L.BOX(11, 6, 70, 20, 219);
  gotoxy(31, 9);
  cout << "E D I T  M E N U";
  gotoxy(30, 13);
  cout << "1: DELETE RECORD";
  gotoxy(30, 14);
  cout << "2: MODIFY RECORD";
  gotoxy(30, 15);
  cout << "0: EXIT";
  gotoxy(30, 17);
  cout << "ENTER YOUR CHOICE :";
  ch = _getch();
  if (ch == 27 || ch == '0')
   break;
  else if (ch == '1')
  {
   EMPLOYEE E;
   E.DELETION();
  }
  else if (ch == '2')
  {
   EMPLOYEE E;
   E.MODIFICATION();
  }
 }
 L.CLEARDOWN();
}


void LINES::LINE_HOR(int column1, int column2, int row, char c)
{
 for (column1; column1 <= column2; column1++)
 {
  gotoxy(column1, row);
  cout << c;
 }
}



void LINES::LINE_VER(int row1, int row2, int column, char c)
{
 for (row1; row1 <= row2; row1++)
 {
  gotoxy(column, row1);
  cout << c;
 }
}



void LINES::BOX(int column1, int row1, int column2, int row2, char c)
{
 char ch = 218;
 char c1, c2, c3, c4;
 char l1 = 196, l2 = 179;
 if (c == ch)
 {
  c1 = 218;
  c2 = 191;
  c3 = 192;
  c4 = 217;
  l1 = 196;
  l2 = 179;
 }
 else
 {
  c1 = c;
  c2 = c;
  c3 = c;
  c4 = c;
  l1 = c;
  l2 = c;
 }
 gotoxy(column1, row1);
 cout << c1;
 gotoxy(column2, row1);
 cout << c2;
 gotoxy(column1, row2);
 cout << c3;
 gotoxy(column2, row2);
 cout << c4;
 column1++;
 column2--;
 LINE_HOR(column1, column2, row1, l1);
 LINE_HOR(column1, column2, row2, l1);
 column1--;
 column2++;
 row1++;
 row2--;
 LINE_VER(row1, row2, column1, l2);
 LINE_VER(row1, row2, column2, l2);
}


//**********************************************************
// THIS FUNCTION CLEAR THE SCREEN LINE BY LINE UPWARD
//**********************************************************

void LINES::CLEARUP(void)
{
 for (int i = 25; i >= 1; i--)
 {
  sleep(20);
  gotoxy(1, i);
  clreol();
 }
}



void LINES::CLEARDOWN(void)
{
 for (int i = 1; i <= 25; i++)
 {
  delay(20);
  gotoxy(1, i);
  clreol();
 }
}


//**********************************************************
// THIS FUNCTION ADDS THE GIVEN DATA IN THE EMPLOYEE'S FILE
//**********************************************************

void EMPLOYEE::ADD_RECORD(int ecode, char ename[26], char eaddress[31], char ephone[10], int d, int m, int y, char edesig[16], char egrade, char ehouse, char econv, float eloan, float ebasic)
{
 fstream file;
 file.open("EMPLOYEE.DAT");
 code = ecode;
 strcpy(name, ename);
 strcpy(address, eaddress);
 strcpy(phone, ephone);
 dd = d;
 mm = m;
 yy = y;
 strcpy(desig, edesig);
 grade = egrade;
 house = ehouse;
 convense = econv;
 loan = eloan;
 basic = ebasic;
 file.write((char *) this, sizeof(EMPLOYEE));
 file.close();
}


//**********************************************************
// THIS FUNCTION MODIFY THE GIVEN DATA IN THE
// EMPLOYEE'S FILE
//**********************************************************

void EMPLOYEE::MODIFY_RECORD(int ecode, char ename[26], char eaddress[31], char ephone[10], char edesig[16], char egrade, char ehouse, char econv, float eloan, float ebasic)
{
 int recno;
 recno = RECORDNO(ecode);
 fstream file;
 file.open("EMPLOYEE.DAT", ios::out | ios::ate);
 strcpy(name, ename);
 strcpy(address, eaddress);
 strcpy(phone, ephone);
 strcpy(desig, edesig);
 grade = egrade;
 house = ehouse;
 convense = econv;
 loan = eloan;
 basic = ebasic;
 int location;
 location = (recno - 1) * sizeof(EMPLOYEE);
 file.seekp(location);
 file.write((char *) this, sizeof(EMPLOYEE));
 file.close();
}


//**********************************************************
// THIS FUNCTION DELETE THE RECORD IN THE EMPLOYEE FILE
// FOR THE GIVEN EMPLOYEE CODE
//**********************************************************

void EMPLOYEE::DELETE_RECORD(int ecode)
{
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 fstream temp;
 temp.open("temp.dat", ios::out);
 file.seekg(0, ios::beg);
 while (!file.eof())
 {
  file.read((char *) this, sizeof(EMPLOYEE));
  if (file.eof())
   break;
  if (code != ecode)
   temp.write((char *) this, sizeof(EMPLOYEE));
 }
 file.close();
 temp.close();
 file.open("EMPLOYEE.DAT", ios::out);
 temp.open("temp.dat", ios::in);
 temp.seekg(0, ios::beg);
 while (!temp.eof())
 {
  temp.read((char *) this, sizeof(EMPLOYEE));
  if (temp.eof())
   break;
  file.write((char *) this, sizeof(EMPLOYEE));
 }
 file.close();
 temp.close();
}


//**********************************************************
// THIS FUNCTION RETURNS THE LAST EMPLOYEE'S CODE
//**********************************************************

int EMPLOYEE::LASTCODE(void)
{
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 int count = 0;
 while (file.read((char *) this, sizeof(EMPLOYEE)))
  count = code;
 file.close();
 return count;
}


//**********************************************************
// THIS FUNCTION RETURNS 0 IF THE GIVEN CODE NOT FOUND
//**********************************************************

int EMPLOYEE::FOUND_CODE(int ecode)
{
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 int found = 0;
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  if (code == ecode)
  {
   found = 1;
   break;
  }
 }
 file.close();
 return found;
}


//**********************************************************
// THIS FUNCTION RETURNS RECORD NO. OF THE GIVEN CODE
//**********************************************************

int EMPLOYEE::RECORDNO(int ecode)
{
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 int recno = 0;
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  recno++;
  if (code == ecode)
   break;
 }
 file.close();
 return recno;
}


//**********************************************************
// THIS FUNCTION DISPLAYS THE LIST OF THE EMPLOYEES
//**********************************************************

void EMPLOYEE::LIST(void)
{
 system("cls");
 int row = 6, found = 0, flag = 0;
 char ch;
 gotoxy(31, 2);
 cout << "LIST OF EMPLOYEES";
 gotoxy(30, 3);
 cout << "~~~~~~~~~~~~~~~~~~~";
 gotoxy(1, 4);
 cout << "CODE NAME                     PHONE    DOJ         DESIGNATION    GRADE  SALARY";
 gotoxy(1, 5);
 cout << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  flag = 0;
  delay(20);
  found = 1;
  gotoxy(2, row);
  cout << code;
  gotoxy(6, row);
  cout << name;
  gotoxy(31, row);
  cout << phone;
  gotoxy(40, row);
  cout << dd << "/" << mm << "/" << yy;
  gotoxy(52, row);
  cout << desig;
  gotoxy(69, row);
  cout << grade;
  if (grade != 'E')
  {
   gotoxy(74, row);
   cout << basic;
  }
  else
  {
   gotoxy(76, row);
   cout << "-";
  }
  if (row == 23)
  {
   flag = 1;
   row = 6;
   gotoxy(1, 25);
   cout << "Press any key to continue or Press <ESC> to exit";
   ch = getch();
   if (ch == 27)
    break;
   system("cls");
   gotoxy(31, 2);
   cout << "LIST OF EMPLOYEES";
   gotoxy(30, 3);
   cout << "~~~~~~~~~~~~~~~~~~~";
   gotoxy(1, 4);
   cout << "CODE NAME                     PHONE    DOJ         DESIGNATION    GRADE  SALARY";
   gotoxy(1, 5);
   cout << "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";
  }
  else
   row++;
 }
 if (!found)
 {
  gotoxy(5, 10);
  cout << "\7Records not found";
 }
 if (!flag)
 {
  gotoxy(1, 25);
  cout << "Press any key to continue...";
  getche();
 }
 file.close();
}


//**********************************************************
// THIS FUNCTION DISPLAYS THE RECORD OF THE EMPLOYEES
//**********************************************************

void EMPLOYEE::DISPLAY_RECORD(int ecode)
{
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  if (code == ecode)
  {
   gotoxy(5, 5);
   cout << "Employee Code # " << code;
   gotoxy(5, 6);
   cout << "~~~~~~~~~~~~~";
   gotoxy(5, 7);
   cout << "Name         : " << name;
   gotoxy(5, 8);
   cout << "Address      : " << address;
   gotoxy(5, 9);
   cout << "Phone no.    : " << phone;
   gotoxy(5, 11);
   cout << "JOINING DATE";
   gotoxy(5, 12);
   cout << "~~~~~~~~~~~~";
   gotoxy(5, 13);
   cout << "Day   : " << dd;
   gotoxy(5, 14);
   cout << "Month : " << mm;
   gotoxy(5, 15);
   cout << "Year  : " << yy;
   gotoxy(5, 17);
   cout << "Designation  : " << desig;
   gotoxy(5, 18);
   cout << "Grade        : " << grade;
   if (grade != 'E')
   {
    gotoxy(5, 19);
    cout << "House (y/n)    : " << house;
    gotoxy(5, 20);
    cout << "Convense (y/n) : " << convense;
    gotoxy(5, 22);
    cout << "Basic Salary   : " << basic;
   }
   gotoxy(5, 21);
   cout << "Loan           : " << loan;
  }
 }
 file.close();
}


//**********************************************************
// THIS FUNCTION GIVE DATA TO ADD IN THE FILE
//**********************************************************

void EMPLOYEE::NEW_EMPLOYEE(void)
{
 system("cls");
 char  ch, egrade, ehouse = 'N', econv = 'N';
 char  ename[26], eaddress[31], ephone[10], edesig[16], t1[10];
 float t2 = 0.0, eloan = 0.0, ebasic = 0.0;
 int   d, m, y, ecode, valid;
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(28, 3);
 cout << "ADDITION OF NEW EMPLOYEE";
 gotoxy(5, 5);
 cout << "Employee Code # ";
 gotoxy(5, 6);
 cout << "~~~~~~~~~~~~~";
 gotoxy(5, 7);
 cout << "Name         : ";
 gotoxy(5, 8);
 cout << "Address      : ";
 gotoxy(5, 9);
 cout << "Phone no.    : ";
 gotoxy(5, 11);
 cout << "JOINING DATE";
 gotoxy(5, 12);
 cout << "~~~~~~~~~~~~";
 gotoxy(5, 13);
 cout << "Day   : ";
 gotoxy(5, 14);
 cout << "Month : ";
 gotoxy(5, 15);
 cout << "Year  : ";
 gotoxy(5, 17);
 cout << "Designation  : ";
 gotoxy(5, 18);
 cout << "Grade        : ";
 gotoxy(5, 21);
 cout << "Loan           : ";

 ecode = LASTCODE() + 1;
 if (ecode == 1)
 {
  ADD_RECORD(ecode, "null", "null", "null", 0, 0, 0, "null", 'n', 'n', 'n', 0.0, 0.0);
  DELETE_RECORD(ecode);
 }
 gotoxy(21, 5);
 cout << ecode;
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter the name of the Employee";
  gotoxy(20, 7);
  clreol();
  gets(ename);
  strupr(ename);
  if (ename[0] == '0')
   return;
  if (strlen(ename) < 1 || strlen(ename) > 25)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..25)";
   getch();
  }
 } while (!valid);
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Address of the Employee";
  gotoxy(20, 8);
  clreol();
  gets(eaddress);
  strupr(eaddress);
  if (eaddress[0] == '0')
   return;
  if (strlen(eaddress) < 1 || strlen(eaddress) > 30)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..30)";
   getch();
  }
 } while (!valid);
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Phone no. of the Employee or Press <ENTER> for none";
  gotoxy(20, 9);
  clreol();
  gets(ephone);
  if (ephone[0] == '0')
   return;
  if ((strlen(ephone) < 7 && strlen(ephone) > 0) || (strlen(ephone) > 9))
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly";
   getch();
  }
 } while (!valid);
 if (strlen(ephone) == 0)
  strcpy(ephone, "-");
 char tday[3], tmonth[3], tyear[5];
 int td;
 do
 {
  valid = 1;
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ENTER DAY OF JOINING";
   gotoxy(13, 13);
   clreol();
   gets(tday);
   td = atoi(tday);
   d = td;
   if (tday[0] == '0')
    return;
  } while (d == 0);
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ENTER MONTH OF JOINING";
   gotoxy(13, 14);
   clreol();
   gets(tmonth);
   td = atoi(tmonth);
   m = td;
   if (tmonth[0] == '0')
    return;
  } while (m == 0);
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ENTER YEAR OF JOINING";
   gotoxy(13, 15);
   clreol();
   gets(tyear);
   td = atoi(tyear);
   y = td;
   if (tyear[0] == '0')
    return;
  } while (y == 0);
  if (d>31 || d<1)
   valid = 0;
  else if (((y % 4) != 0 && m == 2 && d>28) || ((y % 4) == 0 && m == 2 && d>29))
   valid = 0;
  else if ((m == 4 || m == 6 || m == 9 || m == 11) && d>30)
   valid = 0;
  else if (y<1990 || y>2020)
   valid = 0;
  if (!valid)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly";
   getch();
   gotoxy(13, 14);
   clreol();
   gotoxy(13, 15);
   clreol();
  }
 } while (!valid);
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Designation of the Employee";
  gotoxy(20, 17);
  clreol();
  gets(edesig);
  strupr(edesig);
  if (edesig[0] == '0')
   return;
  if (strlen(edesig) < 1 || strlen(edesig) > 15)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..15)";
   getch();
  }
 } while (!valid);
 do
 {
  gotoxy(5, 25);
  clreol();
  cout << "Enter Grade of the Employee (A,B,C,D,E)";
  gotoxy(20, 18);
  clreol();
  egrade = getche();
  egrade = toupper(egrade);
  if (egrade == '0')
   return;
 } while (egrade < 'A' || egrade > 'E');
 if (egrade != 'E')
 {
  gotoxy(5, 19);
  cout << "House (y/n)    : ";
  gotoxy(5, 20);
  cout << "Convense (y/n) : ";
  gotoxy(5, 22);
  cout << "Basic Salary   : ";
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ENTER IF HOUSE ALLOWANCE IS ALLOTED TO EMPLOYEE OR NOT";
   gotoxy(22, 19);
   clreol();
   ehouse = getche();
   ehouse = toupper(ehouse);
   if (ehouse == '0')
    return;
  } while (ehouse != 'Y' && ehouse != 'N');
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ENTER IF CONVENCE ALLOWANCE IS ALLOTED TO EMPLOYEE OR NOT";
   gotoxy(22, 20);
   clreol();
   econv = getche();
   econv = toupper(econv);
   if (econv == '0')
    return;
  } while (econv != 'Y' && econv != 'N');
 }
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "ENTER LOAN AMOUNT IF ISSUED";
  gotoxy(22, 21);
  clreol();
  gets(t1);
  t2 = atof(t1);
  eloan = t2;
  if (eloan > 50000)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7SHOULD NOT GREATER THAN 50000";
   getch();
  }
 } while (!valid);
 if (egrade != 'E')
 {
  do
  {
   valid = 1;
   gotoxy(5, 25);
   clreol();
   cout << "ENTER BASIC SALARY OF THE EMPLOYEE";
   gotoxy(22, 22);
   clreol();
   gets(t1);
   t2 = atof(t1);
   ebasic = t2;
   if (t1[0] == '0')
    return;
   if (ebasic > 50000)
   {
    valid = 0;
    gotoxy(5, 25);
    clreol();
    cout << "\7SHOULD NOT GREATER THAN 50000";
    getch();
   }
  } while (!valid);
 }
 gotoxy(5, 25);
 clreol();
 do
 {
  gotoxy(5, 24);
  clreol();
  cout << "Do you want to save (y/n) ";
  ch = getche();
  ch = toupper(ch);
  if (ch == '0')
   return;
 } while (ch != 'Y' && ch != 'N');
 if (ch == 'N')
  return;
 ADD_RECORD(ecode, ename, eaddress, ephone, d, m, y, edesig, egrade, ehouse, econv, eloan, ebasic);
}


//**********************************************************
// THIS FUNCTION GIVE CODE FOR THE DISPLAY OF THE RECORD
//**********************************************************

void EMPLOYEE::DISPLAY(void)
{
 system("cls");
 char t1[10];
 int t2, ecode;
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(5, 5);
 cout << "Enter code of the Employee  ";
 gets(t1);
 t2 = atoi(t1);
 ecode = t2;
 if (ecode == 0)
  return;
 system("cls");
 if (!FOUND_CODE(ecode))
 {
  gotoxy(5, 5);
  cout << "\7Record not found";
  getch();
  return;
 }
 DISPLAY_RECORD(ecode);
 gotoxy(5, 25);
 cout << "Press any key to continue...";
 getch();
}


//**********************************************************
// THIS FUNCTION GIVE DATA FOR THE MODIFICATION OF THE
// EMPLOYEE RECORD
//**********************************************************

void EMPLOYEE::MODIFICATION(void)
{
 system("cls");
 char  ch, egrade, ehouse = 'N', econv = 'N';
 char  ename[26], eaddress[31], ephone[10], edesig[16], t1[10];
 float t2 = 0.0, eloan = 0.0, ebasic = 0.0;
 int   ecode, valid;
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(5, 5);
 cout << "Enter code of the Employee  ";
 gets(t1);
 t2 = atoi(t1);
 ecode = t2;
 if (ecode == 0)
  return;
 system("cls");
 if (!FOUND_CODE(ecode))
 {
  gotoxy(5, 5);
  cout << "\7Record not found";
  getch();
  return;
 }
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(22, 3);
 cout << "MODIFICATION OF THE EMPLOYEE RECORD";
 DISPLAY_RECORD(ecode);
 do
 {
  gotoxy(5, 24);
  clreol();
  cout << "Do you want to modify this record (y/n) ";
  ch = getche();
  ch = toupper(ch);
  if (ch == '0')
   return;
 } while (ch != 'Y' && ch != 'N');
 if (ch == 'N')
  return;
 system("cls");
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  if (code == ecode)
   break;
 }
 file.close();
 gotoxy(5, 5);
 cout << "Employee Code # " << ecode;
 gotoxy(5, 6);
 cout << "~~~~~~~~~~~~~";
 gotoxy(40, 5);
 cout << "JOINING DATE : ";
 gotoxy(40, 6);
 cout << "~~~~~~~~~~~~~~";
 gotoxy(55, 5);
 cout << dd << "/" << mm << "/" << yy;
 gotoxy(5, 7);
 cout << "Name         : ";
 gotoxy(5, 8);
 cout << "Address      : ";
 gotoxy(5, 9);
 cout << "Phone no.    : ";
 gotoxy(5, 10);
 cout << "Designation  : ";
 gotoxy(5, 11);
 cout << "Grade        : ";
 gotoxy(5, 14);
 cout << "Loan           : ";
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter the name of the Employee or <ENTER> FOR NO CHANGE";
  gotoxy(20, 7);
  clreol();
  gets(ename);
  strupr(ename);
  if (ename[0] == '0')
   return;
  if (strlen(ename) > 25)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..25)";
   getch();
  }
 } while (!valid);
 if (strlen(ename) == 0)
 {
  strcpy(ename, name);
  gotoxy(20, 7);
  cout << ename;
 }
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Address of the Employee or <ENTER> FOR NO CHANGE";
  gotoxy(20, 8);
  clreol();
  gets(eaddress);
  strupr(eaddress);
  if (eaddress[0] == '0')
   return;
  if (strlen(eaddress) > 30)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..30)";
   getch();
  }
 } while (!valid);
 if (strlen(eaddress) == 0)
 {
  strcpy(eaddress, address);
  gotoxy(20, 8);
  cout << eaddress;
 }
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Phone no. of the Employee or or <ENTER> FOR NO CHANGE";
  gotoxy(20, 9);
  clreol();
  gets(ephone);
  if (ephone[0] == '0')
   return;
  if ((strlen(ephone) < 7 && strlen(ephone) > 0) || (strlen(ephone) > 9))
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly";
   getch();
  }
 } while (!valid);
 if (strlen(ephone) == 0)
 {
  strcpy(ephone, phone);
  gotoxy(20, 9);
  cout << ephone;
 }
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "Enter Designation of the Employee or <ENTER> FOR NO CHANGE";
  gotoxy(20, 10);
  clreol();
  gets(edesig);
  strupr(edesig);
  if (edesig[0] == '0')
   return;
  if (strlen(edesig) > 15)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7Enter correctly (Range: 1..15)";
   getch();
  }
 } while (!valid);
 if (strlen(edesig) == 0)
 {
  strcpy(edesig, desig);
  gotoxy(20, 10);
  cout << edesig;
 }
 do
 {
  gotoxy(5, 25);
  clreol();
  cout << "Enter Grade of the Employee (A,B,C,D,E) or <ENTER> FOR NO CHANGE";
  gotoxy(20, 11);
  clreol();
  egrade = getche();
  egrade = toupper(egrade);
  if (egrade == '0')
   return;
  if (egrade == 13)
  {
   egrade = grade;
   gotoxy(20, 11);
   cout << grade;
  }
 } while (egrade < 'A' || egrade > 'E');
 if (egrade != 'E')
 {
  gotoxy(5, 12);
  cout << "House (y/n)    : ";
  gotoxy(5, 13);
  cout << "Convense (y/n) : ";
  gotoxy(5, 15);
  cout << "Basic Salary   : ";
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ALLOTED HOUSE ALLOWANCE ? or <ENTER> FOR NO CHANGE";
   gotoxy(22, 12);
   clreol();
   ehouse = getche();
   ehouse = toupper(ehouse);
   if (ehouse == '0')
    return;
   if (ehouse == 13)
   {
    ehouse = house;
    gotoxy(22, 12);
    cout << ehouse;
   }
  } while (ehouse != 'Y' && ehouse != 'N');
  do
  {
   gotoxy(5, 25);
   clreol();
   cout << "ALLOTED CONVENCE ALLOWANCE or <ENTER> FOR NO CHANGE";
   gotoxy(22, 13);
   clreol();
   econv = getche();
   econv = toupper(econv);
   if (econv == '0')
    return;
   if (econv == 13)
   {
    econv = convense;
    gotoxy(22, 13);
    cout << econv;
   }
  } while (econv != 'Y' && econv != 'N');
 }
 do
 {
  valid = 1;
  gotoxy(5, 25);
  clreol();
  cout << "ENTER LOAN AMOUNT or <ENTER> FOR NO CHANGE";
  gotoxy(22, 14);
  clreol();
  gets(t1);
  t2 = atof(t1);
  eloan = t2;
  if (eloan > 50000)
  {
   valid = 0;
   gotoxy(5, 25);
   clreol();
   cout << "\7SHOULD NOT GREATER THAN 50000";
   getch();
  }
 } while (!valid);
 if (strlen(t1) == 0)
 {
  eloan = loan;
  gotoxy(22, 14);
  cout << eloan;
 }
 if (egrade != 'E')
 {
  do
  {
   valid = 1;
   gotoxy(5, 25);
   clreol();
   cout << "ENTER BASIC SALARY or <ENTER> FOR NO CHANGE";
   gotoxy(22, 15);
   clreol();
   gets(t1);
   t2 = atof(t1);
   ebasic = t2;
   if (t1[0] == '0')
    return;
   if (ebasic > 50000)
   {
    valid = 0;
    gotoxy(5, 25);
    clreol();
    cout << "\7SHOULD NOT GREATER THAN 50000";
    getch();
   }
  } while (!valid);
  if (strlen(t1) == 0)
  {
   ebasic = basic;
   gotoxy(22, 15);
   cout << ebasic;
  }
 }
 gotoxy(5, 25);
 clreol();
 do
 {
  gotoxy(5, 18);
  clreol();
  cout << "Do you want to save (y/n) ";
  ch = getche();
  ch = toupper(ch);
  if (ch == '0')
   return;
 } while (ch != 'Y' && ch != 'N');
 if (ch == 'N')
  return;
 MODIFY_RECORD(ecode, ename, eaddress, ephone, edesig, egrade, ehouse, econv, eloan, ebasic);
 gotoxy(5, 23);
 cout << "\7Record Modified";
 gotoxy(5, 25);
 cout << "Press any key to continue...";
 getch();
}


//**********************************************************
// THIS FUNCTION GIVE CODE NO. FOR THE DELETION OF THE
// EMPLOYEE RECORD
//**********************************************************

void EMPLOYEE::DELETION(void)
{
 system("cls");
 char t1[10], ch;
 int t2, ecode;
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(5, 5);
 cout << "Enter code of the Employee  ";
 gets(t1);
 t2 = atoi(t1);
 ecode = t2;
 if (ecode == 0)
  return;
 system("cls");
 if (!FOUND_CODE(ecode))
 {
  gotoxy(5, 5);
  cout << "\7Record not found";
  getch();
  return;
 }
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(24, 3);
 cout << "DELETION OF THE EMPLOYEE RECORD";
 DISPLAY_RECORD(ecode);
 do
 {
  gotoxy(5, 24);
  clreol();
  cout << "Do you want to delete this record (y/n) ";
  ch = getche();
  ch = toupper(ch);
  if (ch == '0')
   return;
 } while (ch != 'Y' && ch != 'N');
 if (ch == 'N')
  return;
 DELETE_RECORD(ecode);
 LINES L;
 L.CLEARDOWN();
 gotoxy(5, 23);
 cout << "\7Record Deleted";
 gotoxy(5, 25);
 cout << "Press any key to continue...";
 getch();
}


//**********************************************************
// THIS FUNCTION RETURN 0 IF THE GIVEN DATE IS INVALID
//**********************************************************

int EMPLOYEE::VALID_DATE(int d1, int m1, int y1)
{
 int valid = 1;
 if (d1>31 || d1<1)
  valid = 0;
 else if (((y1 % 4) != 0 && m1 == 2 && d1>28) || ((y1 % 4) == 0 && m1 == 2 && d1>29))
  valid = 0;
 else if ((m1 == 4 || m1 == 6 || m1 == 9 || m1 == 11) && d1>30)
  valid = 0;
 return valid;
}


//**********************************************************
// THIS FUNCTION PRINTS THE SALARY SLIP FOR THE EMPLOYEE
//**********************************************************

void EMPLOYEE::SALARY_SLIP(void)
{
 system("cls");
 char t1[10];
 int t2, ecode, valid;
 gotoxy(72, 2);
 cout << "<0>=EXIT";
 gotoxy(5, 5);
 cout << "Enter code of the Employee  ";
 gets(t1);
 t2 = atoi(t1);
 ecode = t2;
 if (ecode == 0)
  return;
 system("cls");
 if (!FOUND_CODE(ecode))
 {
  gotoxy(5, 5);
  cout << "\7Record not found";
  getch();
  return;
 }
 fstream file;
 file.open("EMPLOYEE.DAT", ios::in);
 file.seekg(0, ios::beg);
 while (file.read((char *) this, sizeof(EMPLOYEE)))
 {
  if (code == ecode)
   break;
 }
 file.close();
 int d1, m1, y1;
 struct date d;
 getdate(&d);
 d1 = d.da_day;
 m1 = d.da_mon;
 y1 = d.da_year;
 char *mon[12] = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "November", "December" };
 LINES L;
 L.BOX(2, 1, 79, 25, 219);
 gotoxy(31, 2);
 cout << "NADEEM AKHTAR, PGDBA - 200754667";
 L.LINE_HOR(3, 78, 3, 196);
 gotoxy(34, 4);
 cout << "SALARY SLIP";
 gotoxy(60, 4);
 cout << "Date: " << d1 << "/" << m1 << "/" << y1;
 gotoxy(34, 5);
 cout << mon[m1 - 1] << ", " << y1;
 L.LINE_HOR(3, 78, 6, 196);
 gotoxy(6, 7);
 cout << "Employee Name : " << name;
 gotoxy(6, 8);
 cout << "Designation   : " << desig;
 gotoxy(67, 8);
 cout << "Grade : " << grade;
 L.BOX(6, 9, 75, 22, 218);
 L.LINE_HOR(10, 71, 20, 196);
 int days, hours;
 if (grade == 'E')
 {
  do
  {
   valid = 1;
   gotoxy(10, 21);
   cout << "ENTER NO. OF DAYS WORKED IN THE MONTH ";
   gotoxy(10, 11);
   cout << "No. of Days   : ";
   gets(t1);
   t2 = atof(t1);
   days = t2;
   if (!VALID_DATE(days, m1, y1))
   {
    valid = 0;
    gotoxy(10, 21);
    cout << "\7ENTER CORRECTLY                       ";
    getch();
    gotoxy(10, 11);
    cout << "                    ";
   }
  } while (!valid);
  do
  {
   valid = 1;
   gotoxy(10, 21);
   cout << "ENTER NO. OF HOURS WORKED OVER TIME   ";
   gotoxy(10, 13);
   cout << "No. of hours  : ";
   gets(t1);
   t2 = atof(t1);
   hours = t2;
   if (hours > 8 || hours < 0)
   {
    valid = 0;
    gotoxy(10, 21);
    cout << "\7ENTER CORRECTLY                     ";
    getch();
    gotoxy(10, 13);
    cout << "                    ";
   }
  } while (!valid);
  gotoxy(10, 21);
  cout << "                                               ";
  gotoxy(10, 11);
  cout << "                        ";
  gotoxy(10, 13);
  cout << "                        ";
 }
 gotoxy(10, 10);
 cout << "Basic Salary         : Rs.";
 gotoxy(10, 12);
 cout << "ALLOWANCE";
 if (grade != 'E')
 {
  gotoxy(12, 13);
  cout << "HRA  : Rs.";
  gotoxy(12, 14);
  cout << "CA   : Rs.";
  gotoxy(12, 15);
  cout << "DA   : Rs.";
 }
 else
 {
  gotoxy(12, 13);
  cout << "OT   : Rs.";
 }
 gotoxy(10, 17);
 cout << "DEDUCTIONS";
 gotoxy(12, 18);
 cout << "LD   : Rs.";
 if (grade != 'E')
 {
  gotoxy(12, 19);
  cout << "PF   : Rs.";
 }
 gotoxy(10, 21);
 cout << "NET SALARY           : Rs.";
 gotoxy(6, 24);
 cout << "CASHIER";
 gotoxy(68, 24);
 cout << "EMPLOYEE";
 float HRA = 0.0, CA = 0.0, DA = 0.0, PF = 0.0, LD = 0.0, OT = 0.0, allowance, deduction, netsalary;
 if (grade != 'E')
 {
  if (house == 'Y')
   HRA = (5 * basic) / 100;
  if (convense == 'Y')
   CA = (2 * basic) / 100;
  DA = (5 * basic) / 100;
  PF = (2 * basic) / 100;
  LD = (15 * loan) / 100;
  allowance = HRA + CA + DA;
  deduction = PF + LD;
 }
 else
 {
  basic = days * 30;
  LD = (15 * loan) / 100;
  OT = hours * 10;
  allowance = OT;
  deduction = LD;
 }
 netsalary = (basic + allowance) - deduction;
 gotoxy(36, 10);
 cout << basic;
 if (grade != 'E')
 {
  gotoxy(22, 13);
  cout << HRA;
  gotoxy(22, 14);
  cout << CA;
  gotoxy(22, 15);
  cout << DA;
  gotoxy(22, 19);
  cout << PF;
 }
 else
 {
  gotoxy(22, 13);
  cout << OT;
 }
 gotoxy(22, 18);
 cout << LD;
 gotoxy(33, 15);
 cout << "Rs." << allowance;
 gotoxy(33, 19);
 cout << "Rs." << deduction;
 gotoxy(36, 21);
 cout << netsalary;
 gotoxy(2, 1);
 getch();
}

void main(void)
{
 MENU menu;
 menu.MAIN_MENU();
}