I have a question for operator overloading in structer

[higasijoe]

// for_each example
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

struct myclass {
  void operator() (int i) {cout << " " << i;}
} myobject;

int main () {

  myobject(10);
  return 0;
}

I don't understand this code.
myobject(10) is constructor?
Does struct have a constructor like class?

I wonder operator() operation.
struct also have operator overloading in struct area?
Why did it have initializing ()?

Am I sure or not?
I want to know STL, so I study but I get many questions. :)

[jsmith]

1) No, myobject( 10 ) calls operator() with i=10.
A constructor call has the syntax ClassOrStuctName( parameters )
operator() is called via the syntax VariableName( parameters )

2) The only difference between struct and class in C++ is default
access in structs is public and in classes is private. Otherwise
they are absolutely identical.

3) Therefore, yes, you can overload operators on structs.

[higasijoe]

Thank you jsmith :D
Your answer is very clear that help me a lot.
I didn't get info like yours until now. :D

Have a nice day!!