Opening Text File

[aviatorblue62]

I am trying to write a program for my C++ class, however, my teacher has failed to provide us with the proper materials to complete the project. We are suppose to write a program on the following:

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This program involves developing a menu-driven database application. You need to accept as input from a file a person's first name, last name, phone number, and birth date. This program will be menu driven with the following options:

1. Find a person's name.
2. Add a person to the database.
3. Edit a person's info.
4. Display all records to the screen.
5. Quit.

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It is required for this example that we using binary sorting to rearrange the strings/arrays in the file.

I really don't know what to do... I am at my whits end right now. If anyone could offer some helpful advice I would greatly appreciate it. Here is what I have come up with so far... but I don't know what to do next.

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

void find(char[]);
void add(char[]);
void edit(char[]);
void display(char[]);

int main()
{
    char FILENAME[81];
    int n = 0;
    
    cout << "Enter filename: ";
    cin >> FILENAME;
    
    for (;n!=5;)
    {
        cout << "\nChoose your operation.";
        cout << "\n1 - Find a person's information\n" << "2 - Add a person to the database\n" << "3 - Edit a person's information\n" << "4 - Display all of the records\n";
        cout << "5 - Quit\n";
        cout << "==> ";
        cin >> n;
    
        switch (n)
        {
            case 1:
                find(FILENAME);
                break;
            case 2:
                add(FILENAME);
                break;
            case 3:
                edit(FILENAME);
                break;
            case 4:
                display(FILENAME);
                break;
            case 5:
                break;
        }
    }
}

void find(char FILENAME[])
{
    string firstname, lastname;
    string onename, lstname, phone, dob;
    ifstream data;
    data.open(FILENAME);
    
    cout << "Who would you like to find?\n" << "First Name: ";
    cin >> firstname;
    cout << "Last Name: ";
    cin >> lastname;
    
    while (!data.eof())
    {
        data >> onename;
        data >> lstname;
        data >> phone;
        data >> dob;
        
        if (firstname == onename && lastname == lstname)
        {
            cout << endl << onename << " " << lstname << " " << phone << " " << dob << endl;
        }
        
    }
}

void add(char FILENAME[])
{
    string onename, lstname, phone, dob;
    ofstream data;
    data.open (FILENAME);
    
    data.eof();
    
    cout << "Enter the information below\n" << "First Name: ";
    cin >> onename;
    cout << "Last Name: ";
    cin >> lstname;
    cout << "Phone Number: ";
    cin >> phone;
    cout << "DOB: ";
    cin >> dob;
    
    data << onename << " ";
    data << lstname << " ";
    data << phone << " ";
    data << dob;
    
    data.close();
}

void edit(char FILENAME[])
{
    int f, line = 0, j = 0;
    string firstname, lastname;
    string onename, lstname, phone, dob;
    
    cout << "Who would you like to edit?\n" << "First Name: ";
    cin >> firstname;
    cout << "Last Name: ";
    cin >> lastname;
    
    fstream data;
    data.open(FILENAME);
    
    while (!data.eof() && j == 0)
    {
        line = ++line;
        data >> onename;
        data >> lstname;
        data >> phone;
        data >> dob;
        
        
        if (firstname == onename && lastname == lstname)
        {
            j = 1;
            cout << endl << onename << " " << lstname << " " << phone << " " << dob << endl;

            
            cout << "What would you like to edit?\n";
            cout << "1 - First Name\n" << "2 - Last Name\n" << "3 - Phone Number\n" << "4 - DOB\n" << "==> ";
            cin >> f;
            
            switch (f)
            {
                case 1:
                    cout << "Enter new first name: ";
                    cin >> onename;
                    break;
                
                case 2:
                    cout << "Enter new last name: ";
                    cin >> lstname;
                    break;
                
                case 3:
                    cout << "Enter new phone number: ";
                    cin >> phone;
                    break;
                
                case 4:
                    cout << "Enter new DOB: ";
                    cin >> dob;
                    break;
            }
            
            data << onename;
            data << lstname;
            data << phone;
            data << dob;
            
            data.close();
        }
    }

}

void display(char FILENAME[])
{
    string output;
    ifstream data;
    data.open(FILENAME);
    
    while (!data.eof())
    {
        for (int i = 0; i < 4; i++)
        {
            data >> output;
            cout << output << " ";
        }
        
        cout << endl;
    }
}

[coder777]

What exactly is your problem?

By the way: 'binary sorting' dosen't exist. See:

http://en.wikipedia.org/wiki/Sorting_algorithm


what you're looking for is binary search? See:

http://en.wikipedia.org/wiki/Binary_search