Writing Functions

C++

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General C++ Programming
Writing Functions

I need some advice on how to proceed with writing a display and writing a function to save the updated data to a new file.

#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
using namespace std;

struct monthlySales
{
	int january;
	int february;
	int march;
	int april;
	int may;
	int june;
	int july;
	int august;
	int september;
	int october;
	int november;
	int december;
	int year;
};

struct empSales
{
	monthlySales year2009;
	monthlySales year2010;
};
struct emp
{
	int id;
	string firstName;
	string middleName;
	string lastName;
	int houseNum;
	string streetName;
	string city;
	string state;
	int zipCode;
	string homePhoneNum;
	string cellPhoneNum;
	string faxNum;
	string pagerNum;
	string priEmail;
	string secEmail;
	empSales sales;
};

struct salesByQuarter
{
	int id;
	double q1;
	double q2;
	double q3;
	double q4;
	double totalSales;
};




void wrightEmployeeDataFile(fstream &fin1, fstream &fin2, const emp employee[]);
void openSalesByMonthDataFile(fstream &fin2, emp employee[]);
void displayQuarterlySales(emp employee[], const int TOTAL_EMPLOYEES);
int openEmployeeDataFile(fstream &fin1, emp employee[]);
int addNewEmployee(emp employee[], int empId);
int editEmployeeData(emp employee[], int empId);
int editSalesByMonth(emp employee[], int empId);

int main()
{
	fstream file1, file2;
	int caseCount = 0;
	int totalEmployees = 0;
	const int MAX_EMPLOYEE = 50;

	int userChoice = 0;

	emp employee[MAX_EMPLOYEE];

	totalEmployees =openEmployeeDataFile(file1, employee);
	openSalesByMonthDataFile(file2, employee);


	cout << "1 Add new employee" << endl;
	cout << "2 Update employee information" << endl;
	cout << "3 Update employee sales" << endl;
	cout << "4 View quarterly sales" << endl;
	cout << "5 Save all data to file" << endl;
	cout << "Please enter your selection :";
	cin >> userChoice;

	switch(userChoice)
	{
	case 1:
		addNewEmployee(employee, totalEmployees);
		break;
	case 2:
		editEmployeeData(employee, totalEmployees);
		break;
	case 3:
		editSalesByMonth(employee, totalEmployees);
	case 4:
		displayQuarterlySales(employee, totalEmployees);
		break;
	case 5:
		cout << "Updating employee information and sales";
		//wrightEmployeeDataFile(file1, file2, employee);
		break;
	default:
		cout <<"Invalid choice" << endl;
		userChoice = 0;
		break;

	}
	file1.close();
	file2.close();

	system ("pause");

	return 0;
}
/******************************************************************************
******************************************************************************/
int openEmployeeDataFile(fstream &fin1, emp employee[])
{
	const int MAX_STRING_LENGHT = 50;
	const int MAX_FILE_NAME = 50;
	int employeeCounter = 0;
	char line[MAX_STRING_LENGHT];
	char employeeFileName[MAX_FILE_NAME];

	cout << "Enter Employee Data File Name :";

	cin >> employeeFileName;
	fin1.open(employeeFileName);

	if(fin1.fail())
	{
		cout << "File Failed to Open." << endl;
	}
	while(!fin1.eof())
	{
		fin1.getline(line,MAX_STRING_LENGHT,'|');
		employee[employeeCounter].id = atoi(line);
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].firstName = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].middleName = line;
		fin1.getline(line,MAX_STRING_LENGHT,'|');
		employee[employeeCounter].lastName = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].houseNum = atoi(line);
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].streetName = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].city = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].state = line;
		fin1.getline(line,MAX_STRING_LENGHT,'|');
		employee[employeeCounter].zipCode = atoi(line);
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].homePhoneNum = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].cellPhoneNum = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].faxNum = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].pagerNum = line;
		fin1.getline(line,MAX_STRING_LENGHT,'?');
		employee[employeeCounter].priEmail = line;
		fin1.getline(line,MAX_STRING_LENGHT,'/n');
		employee[employeeCounter].secEmail = line;
		++employeeCounter;
	}
	return employeeCounter;
}
/******************************************************************************
******************************************************************************/
void openSalesByMonthDataFile(fstream &fin2, emp employee[])
{
	int yearNum = 0;
	int monthNum = 0;
	int salesForMonth = 0;
	int idNum = 0;
	const int MAX_STRING_LENGHT = 50;
	const int MAX_FILE_NAME = 50;
	char stringIdNum[MAX_STRING_LENGHT];
	char stringYearNum[MAX_STRING_LENGHT];
	char stringMonthNum[MAX_STRING_LENGHT];
	char stringSalesForMonth[MAX_STRING_LENGHT];
	char salesFileName[MAX_FILE_NAME];
	cout << "Enter Employee Sales File Name :";

	cin >> salesFileName;
	fin2.open(salesFileName);

	if(fin2.fail())
	{
		cout << "File Failed to Open." << endl;
	}
	while(!fin2.eof())
	{
		fin2.getline(stringIdNum, MAX_STRING_LENGHT, '|');	
		fin2.getline(stringYearNum, MAX_STRING_LENGHT, '|');
		fin2.getline(stringMonthNum , MAX_STRING_LENGHT, '|');
		fin2.getline(stringSalesForMonth, MAX_STRING_LENGHT);

		idNum = atoi(stringIdNum);		
		yearNum = atoi(stringYearNum);
		monthNum = atoi(stringMonthNum);
		salesForMonth = atoi(stringSalesForMonth);

		//sales[idNum].id = idNum;

		if(2009 == yearNum)
		{
			employee[idNum].sales.year2009.year = yearNum;
			switch(monthNum)
			{
			case 1:
				employee[idNum].sales.year2009.january = salesForMonth;
				break;
			case 2:
				employee[idNum].sales.year2009.february = salesForMonth;
				break;
			case 3:
				employee[idNum].sales.year2009.march = salesForMonth;
				break;
			case 4:
				employee[idNum].sales.year2009.april = salesForMonth;
				break;
			case 5:
				employee[idNum].sales.year2009.may = salesForMonth;
				break;
			case 6:
				employee[idNum].sales.year2009.june = salesForMonth;
				break;
			case 7:
				employee[idNum].sales.year2009.july = salesForMonth;
				break;
			case 8:
				employee[idNum].sales.year2009.august = salesForMonth;
				break;
			case 9:
				employee[idNum].sales.year2009.september = salesForMonth;
			case 10:
				employee[idNum].sales.year2009.october = salesForMonth;
				break;
			case 11:
				employee[idNum].sales.year2009.november = salesForMonth;
				break;
			case 12:
				employee[idNum].sales.year2009.december = salesForMonth;
				break;
			}
		}
		else
		{
			employee[idNum].sales.year2010.year = yearNum;
			switch(monthNum)
			{
			case 1:
				employee[idNum].sales.year2010.january = salesForMonth;
				break;
			case 2:
				employee[idNum].sales.year2010.february = salesForMonth;
				break;
			case 3:
				employee[idNum].sales.year2010.march = salesForMonth;
				break;
			case 4:
				employee[idNum].sales.year2010.april = salesForMonth;
				break;
			case 5:
				employee[idNum].sales.year2010.may = salesForMonth;
				break;
			case 6:
				employee[idNum].sales.year2010.june = salesForMonth;
				break;
			case 7:
				employee[idNum].sales.year2010.july = salesForMonth;
				break;
			case 8:
				employee[idNum].sales.year2010.august = salesForMonth;
				break;
			case 9:
				employee[idNum].sales.year2010.september = salesForMonth;
			case 10:
				employee[idNum].sales.year2010.october = salesForMonth;
				break;
			case 11:
				employee[idNum].sales.year2010.november = salesForMonth;
				break;
			case 12:
				employee[idNum].sales.year2010.december = salesForMonth;
				break;
			}
		}
	}
}
/******************************************************************************
******************************************************************************/
void wrightEmployeeDataFile()
{
}

tnngo (6)

/******************************************************************************
******************************************************************************/
int addNewEmployee(emp employee[], int empid)
{
	return 0;
}
/******************************************************************************
******************************************************************************/
void displayQuarterlySales(emp employee[], const int TOTAL_EMPLOYEES)
{	
	double firstQuarter = 0;
	double secondQuarter = 0;
	double thirdQuarter = 0;
	double fourthQuarter = 0;
	double totalSales = 0;
	int userChoice = 0;

	cout << "1 2009 quarterly sales report" << endl;
	cout << "2 2010 quarterly sales report" << endl;
	cout << "Please enter your selection :";
	cin >> userChoice;
	switch(userChoice)
	{
	case 1:
		for(int empCount=0; empCount < TOTAL_EMPLOYEES; ++empCount)
		{
			firstQuarter = (employee[empCount].sales.year2009.january + employee[empCount].sales.year2009.february + employee[empCount].sales.year2009.march);
			secondQuarter = (employee[empCount].sales.year2009.april + employee[empCount].sales.year2009.may + employee[empCount].sales.year2009.june);
			thirdQuarter = (employee[empCount].sales.year2009.july + employee[empCount].sales.year2009.august + employee[empCount].sales.year2009.september);
			fourthQuarter = (employee[empCount].sales.year2009.october + employee[empCount].sales.year2009.november + employee[empCount].sales.year2009.december);
			totalSales =(firstQuarter + secondQuarter+thirdQuarter + fourthQuarter);
			cout << employee[empCount].id << employee[empCount].sales.year2009.year << employee[empCount].firstName << employee[empCount].middleName << employee[empCount].lastName << firstQuarter << secondQuarter << thirdQuarter << fourthQuarter << totalSales; // add iomanip stuff here
		}
	}
}
/******************************************************************************
******************************************************************************/
int editEmployeeData(emp employee[], int empId)
{
	return 0;
}
/******************************************************************************
******************************************************************************/
int editSalesByMonth(emp employee[], int empId)
{
	return 0;
}

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