objects-1.c

#include <stdio.h>

typedef struct
{
  int type;
} t_base;

typedef struct
{
  int type;
  int content;
} t_integer;

typedef struct
{
  int type;
  char *content;
} t_string;

int main (void)
{
  t_integer i = { 1, 42 };
  t_string s = { 2, "Hello, world!" };

  t_base *object[] = { &i, &s };

  return 0;
}