I have a few question about structs.

Question

What is the meaning of struct example* function()? What kind of a function we had defined?

Answer 1

Consider:

#include <iostream>

struct example
{
example* func()
{
return this;
}
// This is a function which returns the address of its own instance of the structure.
};

int main() {
example obj;
std::cout << obj.func();
return 0;
}