Is it possible to add code that changes a/an depending on if the word starts with a vowel or a consonant.

Hi there, Yusuf Mohamed ! I received your request for assistance. Yes, this would be possible and isn't a bad idea. You could check if the first character of the next word matches a vowel and change the indefinite article based on that. And while it will be correct most of the time, it will not be 100% accurate.

As you likely know, English has many exceptions to every rule. Strictly speaking, the indefinite article "a/an" is not determined by the following letter being a consonant or a vowel, rather it is determined by the sound of the next letter. For example, the word "university" begins with a "u", but that "u" is pronounced differently in "university" than it is in "umbrella". We say "an umbrella" but say "a university" and this is dependent upon the sound of that following vowel. Notable exceptions are "u"s as I covered earlier where the u is pronounced as "you". You also have "o" that can be pronounced as "w": an octagon, a one-sided argument. Silent "h"s also abound: an honor, a high school.

Just be aware that to have it be very accurate, you might have to make an exception list of words as well.

Hope this helps!