Can I get a bit more explanation about how the passing of the function as a parameter worked?

#1

Here the prototype is
void bubble_sort(int a[],int n,bool(&cmp)(int a,int b))
I want to umderstand why &cmp is used?specifically why & is used?

#2

hello @Nitin-Bhattacharyya-2319140631658033
bool &cmp(int a,int b) is declaration of passed function .
we use & before any function name when we want to send it as refrence.

for more detailsrefer this -> link

#3

Can’t we just directly write bool (cmp)(int a,int b)?

#4

yeah we can do that as well

#5

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