Sending function as a parameter to another function?

#1

I am having doubt in this , i havent understood its working .

#2

@LPU11910344 how passing of function as parameter works or how comparator passed(function) passed in sort function works?
In case of comparators, comparators are boolean functions that compare two elements of the container.
container should return true, when the first parameter of the comparator need to be placed ahead of second. Eg

bool comp(int a, int b)
{
     return a>b;
}

this will cause the array to be sorted in descending order, as when a is greater than b it returns true, a is put before b.
If this resolves your doubt mark it as resolved.

#3

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