The : in function definitions?

[Darkware]

int addTwoNum(int a, int b) : (bunch of crap goes here) {
 return (a+b);
}

What is it called so I can look up information about it? I tried looking up basic function information, but nothing I saw covered it, but I know I've seen it before.

[H00G0]

This is [would be] an initialiser list [for a class or struct constructor] : https://en.cppreference.com/w/cpp/utility/initializer_list

[Peter87]

It looks like a member initializer list (not to be confused with std::initializer_list) but those are only allowed on constructors, not on regular functions.

[H00G0]

Oh yes my bad, should have specified that they are not allowed for functions..

[Darkware]

Thank you for the quick replies. I will look into it. Thanks.