포인터를 이용한 재미있는 소스

#include <iostream>

using namespace std;

double d =3.14;

typedef struct test Data;
typedef struct test * Pdata;
typedef struct test *(*FP)(Pdata);
typedef int *(*FP2)(Pdata);

struct test
{
 int a;
 double * d;
 struct test *Ptest;
 int arrp[3][2];
};

struct test * func1(Pdata Px)
{
 return Px->Ptest;
}
int * func2(Pdata Px)
{
 return &(Px->a);
}

void my_test(char a,...)
{
 cout<<**(double **)(&a+4)<<endl;
 cout<<*((*((Pdata *)(&a+8)))->d)<<endl;
 cout<<*((*((FP *)(&a+12)))(*((Pdata *)(&a+8)))->d)<<endl;
 cout<< **(double **)(((int *)(((*((FP2 *)(&a+16)))(*((Pdata *)(&a+8))))))+1)<<endl;
 cout<<**(double **)(((int *)(&a+20))-4)<<endl;
}
int main()
{
 Data x = {100,&d,&x,{0,100,200,300,400,500}};
 my_test('A',&d,&x,func1,func2,&x.arrp[0][2]);
}