I did not understand the use of cst and nst

#1

why do we need cst and nst both.

#2

Hii Nipun,
When the columns are changing in each row then you need cst and nst both.

#3

Hey Nipun,
As you are not responding to this thread, I am marking your doubt as Resolved for now. Re-open it if required.

Please mark your doubts as resolved in your course’s “ Ask Doubt ” section, when your doubt is resolved.