C++ Programming Assignment: Char Issue

[NoCompletion]

I'm working on an assignment for one of my programming classes and ran into the following issue. As you can see the program outputs a menu and the user enters their choice (denoted as the char variable option). The issue is if the user enters a value such as 23 as an input the program takes the last entered char, in this case 3. This programming assignment specifically asked for this variable to be a char. Is there anyway to have the program recognize that the user entered two characters and not one?

  char Menu ()
  {
	bool flag = true;
	char option;
	while ( flag )
	{
		cout << setw(4) << setfill(' ') << ' '
		     << "1 - Change office from occupied to empty" << endl;
		
		cout << setw(4) << setfill(' ') << ' '
	             << "2 - Modify office occupant type" << endl;
		
		cout << setw(4) << setfill(' ') << ' '
		     << "3 - Change office from empty to occupied" << endl;
		
		cout << setw(4) << setfill(' ') << ' '
		     << "D - Done making modifications" << endl;
		
		cout << "Enter option: ";
		cin >> option;
		option = toupper (option);
		
		if (option == '1' || option == '2' || option == '3' || option == 'D')
		{
			return option;
		}
		else if( option != '1' || option != '2' || option != '3' || option != 'D' )
		{
			cout << "ERROR: Invalid option entered. Try again." << endl << endl;
		}
	}
}

[SamuelAdams]

you could use string instead of char.

[DyslexicChciken]

If you must use char, you can try something like this:

#include <iostream>

using namespace std;


int main()
{
	char c[2]; // size of char array doesn't actually matter as long as it's >=1

	cin.get(c, 3); // reads 3-1=2 char from stream

	if(cin.gcount() >= 2) 
		cout << "ERROR: TOO MANY CHAR" << endl;

	cin.clear(); //clears cin error flags

	cin.ignore(1000, '\n'); //clears 1000 char from stream buffer

	return 0;

}

The gcount() is a function that counts how many times you use a cin function to get an input value. In this case gcount() counts the number of times we received input from get() cin function.

[NoCompletion]

Thank you both SamuelAdams and DyslexicChciken. I'll mark this one as solved. Thank you both again for your help.