How to determine the holes in letters using C sharp programming?

Answer 1

What do you mean? Holes in letters? White spaces?
Take a look for reference, it's not exactly what you've been looking for:
https://code.sololearn.com/cxmrWaaWXv2g/?ref=app

Answer 2

Holes in letter.

Answer 3

Do you mean o or q?

Answer 4

Yes

Answer 5

For example if I enter CODECHEF the answer will be 2