How can we count the number of segments in a cell

Hello,

I have numeric data as below
11.4.6
11.4.6.1
11.4.6.2
11.4.6.3
11.4.6.4
11.4.6.5
11.4.6.6
11.4.7
etc..
I have around 10,000 lines of data like this

I need to count the number segments.
Ex: 11.4.6.1 has 4 segments(11,4,6,1) same way 11.4.7 has 3 segments.
How can I Automate it.?

Its simple my friend
use this formula

=len(a1)-(len(a1)-len(substitute(a1,".","")))

@martindwilson:: Thank you, it worked

@ gailkwad.mm :: this formula does only count the number of digits..

Thank you both for your time..