readChar

// DESCRIPTION:		reads input from user, returns char value (error-checked using bounds)
	// PRECONDITIONS:
	// POSTCONDITIONS:
	public static char readChar(String prompt, Scanner key, String validChars)
    {
        System.out.print(prompt);
        char userInput = key.charAt(0);
        boolean isValid = (validChars);
        return '*'; //TODO: remove when you are ready to implement method definition (keeps compiler happy)
    }