Passing by reference of set

#1

in void permute we accepting the address of the set s which is being passed from main.
so we should store it in a pointer variable?
But instead we are writing set &s.
Why?

#2

hello @pranaynigam

please read about reference variables in c++.
its differnt from pointer

#3

please give me a link to read

#4

pls check this ->link

#5

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