Get a book, use Google to do a search (Hint: C++ tutorial), take a course,
but do not post messages on an Office VBA group.

With a bit of effort, you might even find a C++ newsgroup, but even the
users in that group will not teach you from scratch, this is not the purpose
of newsgroups.

How?  By doing what anyone has to do when they have a NEED.

By doing something about it.

SendKeys "+c+=+="