how to use function as variable c++

Question

I want to create somekind of event system in c++ for my needs

I know that you can use fuction as other function parameter

May be i missed something(But in c# you can do it with events handlers)

Answer 1

You can store it in a pointer. For example

void func(int a) { ... }
void (*ptr)(int) = &func;
(*ptr)(5); // call the function with value 5

ptr is a pointer which takes as value a memory of a function that has one 'int' argument and 'void' as return type.