inheritance

inherit.c

#include <stdio.h>

/* ---------------------------------- */

#define struct_Named                  \
  char *name

struct Named
{
  struct_Named;
};

/* ---------------------------------- */

struct Account;

#define struct_Account                \
  struct_Named;                       \
  struct Account *next

struct Account
{
  struct_Account;
};

/* ---------------------------------- */

struct ImapAccount
{
  struct_Account;
  int i;
};

struct PopAccount
{
  struct_Account;
  int p;
};

int main()
{
  struct ImapAccount ia;
  ia.name = "imap";
  ia.next = NULL;
  ia.i = 42;

  struct PopAccount pa;
  pa.name = "pop";
  pa.next = NULL;
  pa.p = 99;

  printf ("%s, %d\n", ia.name, ia.i);
  printf ("%s, %d\n", pa.name, pa.p);
  return 0;
}