Syntax explanation

Question

Hi, I have this task In code playground.
In this string : int(*f2)(int,int)=f1;
As I understand we overload(or override? function) but how this syntax construct? What Standart It Is I’cant find It on cppreference.com ..?
Task code:
int f1(int a, int b){return a+b;}
int f2(int a, int b){return a-b;}
int main() {
cout<<f2(2,2);
int(*f2)(int,int)=f1;
cout<<f2(2,2);
f2=::f2;
cout<<f2(2,2);
return 0;
}

Answer 1

Function pointer !
Thank you👍🏽