Once info has been written into txt file, edit through command prompt

[GhettoBurger]

So with the help of the guys here I've managed to create a vector that stores information into a txt file.

The system function as stated below, Staff can
1) Add station (no limitation to how many can be added, station info consists of 4 strings and 1 int that have to be added)
2) View Stations (simply read the station txt file above)
3) Edit stations

The issue I'm currently facing is editing the stations. I would like to do so through the command prompt, I am not sure how exactly this will be accomplished. If the user simply drags the mouse over to the information he would like edited and starts removing/adding information that would be ideal.

void Staff::ManageSelangorRailway()
{
	int select;
	cout << "Please select one of the following options: \n\n";
	cout << "1) Add Station 2) Edit/Delete Station 3) View Station 4) Return";
	cin >> select;

	switch (select)
	{
	case 1:
	{
		vector <StationInfo> getStationInfo;
		ofstream out("SelangorStations.txt", ofstream::out | ofstream::app);
		char accept = 'y';
		char reject = 'n';
		while (tolower(accept) == 'y')
		{
			StationInfo stationInfo = GetStationInfo();
			getStationInfo.push_back(stationInfo);
			cout << endl;
			out << stationInfo;

			cout << "Would you like to add another station ? (y/n): ";
			
			if (cin >> accept)
			{
				out.close();
			}
			else if (cin >> reject)
			{
				Staff();
			}
		}
		break;
	}
	case 2:
	{
		
	}

I have searched quite a few resources and attempted to edit the code in order to make it work with mine, does not seem to be working though.

Not sure if I should fill up the question up with my failed attempts. If any of you want them I'll share.

[Repeater]

For "edit", think "replace".

If the user wants to edit a station, you remove that station entirely and add a new one; whatever updated value the user entered.

The file is then rewritten, completely.

[GhettoBurger]

@Repeater I think I understand what your saying but no matter what I do theres always something wrong with the code, it either add on new information without removing the old or a flood of error come pouring down on me.

Been trying to solve this issue for a couple of days now.

I apologize for not replying sooner, I just didn't have anything to update you with.

[GhettoBurger]

At this point would anyone mind, writing out the code. I'm burnt out and would love nothing more then to understand it by actually looking at the code.