Regarding passing of comparator function

#1

I am not clear regarding the use of & while passing the function.
Is it like we are passing reference to a function or something else? Like we can pass reference to a variable but what does it imply to pass reference to a function?

#2

Hey @vageesha by default sort function order the elements in ascending order.
but if we want to order them in some different order then comparator functions are needed .
inside comparators we write how we want to order any two entries in our container .

You can call but then it will work only for two numbers. We have array which can have so many numbers .To understand more, you can read this.
http://www.cplusplus.com/reference/algorithm/sort/

#3

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