se.moevm.info

// Programming 1. Sample at 2017-03-02-13-55.55
#include <stdio.h>
 
struct Person
{
  const char *name;
  int age;
} person;
 
void print_nice(const struct Person *p)
{
  printf("Person %s age %d\n",p->name,p->age);
}
 
void print_ugly(const struct Person *p)
{
  printf("[%s,%d]\n",p->name,p->age);
}
 
void print(const struct Person *obj, 
  void (*printer)(const struct Person*))
{
  printer(obj);
}
 
int main(/*int c, char **v */)
{
  person.name = "Vasya";
  person.age = 15;
 
  print(&person,print_nice);
  print(&person,print_ugly);
 
  return 0;
}

// Programming 1. Sample at 2017-03-02-13-55.55
#include <stdio.h>
 
struct Person
{
  const char *name;
  int age;
  void (*print)(const struct Person*);
  void (*printer)(const struct Person*);
  struct Person *This;
} person1, person2;
 
void print_nice(const struct Person *p)
{
  printf("Person %s age %d\n",p->name,p->age);
}
 
void print_ugly(const struct Person *p)
{
  printf("[%s,%d]\n",p->name,p->age);
}
 
void print(const struct Person *obj)
{
  obj->printer(obj);
}
 
 
 
int main(/*int c, char **v */)
{
  person1.name = "Vasya";
  person1.age = 15;
  person1.print = print;
  person1.printer = print_nice;
  person1.This = &person1;
 
  person2.name = "Petya";
  person2.age = 51;
  person2.print = print;
  person2.printer = print_ugly;
  person2.This = &person2;
 
  person1.print(&person1);
  person2.print(&person2);
 
  return 0;
}