C + + callback Demo (thread version) __c++

#include <iostream>
#include <string>
#include <pthread.h>
using namespace std;
typedef void (*MYFUN) (int n, string str);

Class Call
{
private:
  myfun myfun;
Public:
  void Setfun (Myfun _myfun)
    {
      myfun = _myfun;
    }
  void Letrun (int n, string str)
    {
      myfun (n, str);
    }
};

Call call;

Definition in class must be static member function static
void Test (int n, string str)   
{
  cout << "n =" << n << "str =" & lt;< str <<endl;
}

Defined in the class, it must be a static member function
*DETECTD (void* data) {
  //call call
  . Letrun (* (int *) data, "Callback success!");
  return 0;
}

int main ()
{
 //callback interface for function, and pass in a function as parameter call
 . Setfun (Test);
 pthread_t Tid; 
 int data = 1234;
 Pthread_create (&tid, NULL, DETECTD, &data);
 Pthread_join (tid,null);
 return 0;
}