Thread: looping problem

ok i think i have a problem with my loop in a function. i am reading a file to it and i need it to check to see if the buffer is equal to the user input, and if not go to the next line and do the sane again and print out when the result is found

i think the problem is in the loop as its not working properly but not sure, can someone please help

Code:

// Cfunctions.cpp: implementation of the functions class.
//
//////////////////////////////////////////////////////////////////////

#include "functions.h"
#include <iostream>
#include <windows.h>
#include <fstream.h>
#include <conio.h>
#include <stdlib.h>

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

Cfunctions::Cfunctions()
{

}

Cfunctions::~Cfunctions()
{

}

Cfunctions::Printall()
{
	system("cls"); //try to find an alternative in the faq

	ifstream file;
	file.open("flight.txt",ios::nocreate);

	if(!file)
		return -1;
	
	while(file && !file.eof()) 
	{ 
                file.get(ch); 

		switch(ch)
		{
			case '~': 
			case '%': 
			case '#':
				ch = 0;
				break; //really kind of unecessary
		}
	        cout << ch << flush;
	}			 

	file.close(); 
	getch(); 

	return 0;
}

int Cfunctions::Flightdetails()
{
	char temp[5];

	cout << "Please enter flight number" << endl;
	cin >> temp;
	system("cls");

	ifstream is("flight.txt",ios::nocreate);
	if(!is)
		return -1;

	
	char buffer[48];
	char buffer2[48];

	do 
	{
		is.getline(buffer,48, '#');
		if (buffer[0] == temp[0])
		{
			if (buffer[1] == temp[1])
			{
				if (buffer[2] == temp[2])
				{
					if (buffer[3] == temp[3])
					{
						if (buffer[4] == temp[4])
						{
							if (buffer[5] == temp[5])
							{
								cout << temp[0] << endl;
								cout << temp[1] << endl;
								cout << temp[2] << endl;
								cout << temp[3] << endl;
								cout << temp[4] << endl;
								cout << temp[5] << endl;
								cout << buffer << endl;
							}
						}
					}
				}
			}
		}
		else 
		{
			if (n == 0)
			{
				is.seekg(45, ios::beg);
				n++;
				cout << n << endl;
			}
			else
			{
				is.seekg(45, ios::cur);
			}
		}
		
	}while(is && !is.eof());	

	is.close();

    return 0;
}

ok header file for the function class

Code:

// Cfunctions.h: interface for the functions class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_FUNCTIONS_H__ECEF15DB_CE60_4219_8B22_357BD983EDFA__INCLUDED_)
#define AFX_FUNCTIONS_H__ECEF15DB_CE60_4219_8B22_357BD983EDFA__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class Cfunctions  
{
public:
	Cfunctions();
	virtual ~Cfunctions();
	int Printall();
	int Flightdetails();

	char ch;
	char flightno[6];
	int n;

};

and main function

Code:

#include <iostream>
#include <windows.h>
#include <fstream.h>
#include <conio.h>
#include <stdlib.h>
#include "functions.h"

Cfunctions func;


int numchoice;

int main()
{
	cout << "Welcome to the Airport Flight Database" << endl;
	cout << " " << endl;
	cout << "1 - Display all Flight information" << endl;
	cout << "2 - Display details for Flight number________ " << endl;
	cout << "3 - Find Flight(s) for a set route" << endl;
	cout << "4 - Display Flight Length" << endl;
	cout << "5 - Flight Extra's" << endl;
	cout << "6 - Exit Program" << endl;
	cin >> numchoice;

	switch(numchoice)
	{
		case 1:
			func.Printall();
		break;
		case 2:
			func.Flightdetails();
		break;

		case 6:
			return 0;
		break;

		default:
			cout << "Error invalid entery please try again" << endl;
		break;
	}


	return 0;


}

prob same again with main for #includes