#include <stdio.h>
#include <malloc.h>
struct person {
char *name;
unsigned int age;
void (*speak)(void);
void (*eat)(void);
};
void speak_chinese(void)
{
printf("speak chinese!\n");
}
void eat_bread(void)
{
printf("eat bread!\n");
}
struct person *init_person(void)
{
struct person *person = NULL;
person = (struct person *)malloc(sizeof(struct person));
if(!person){
printf("alloc memroy failed.\n");
return NULL;
}
person->name = "AndyLiu";
person->age = 38;
person->speak = speak_chinese;
person->eat = eat_bread;
printf("name is %s, age is %d\n", person->name, person->age);
return person;
}
void free_person(struct person *person)
{
if(person != NULL){
free(person);
person = NULL;
}
}
int main(void)
{
chinese_person = init_person();
if(chinese_person){
chinese_person->speak();
chinese_person->eat();
free_person(chinese_person);
}
return 0;
}
#include <malloc.h>
struct person {
char *name;
unsigned int age;
void (*speak)(void);
void (*eat)(void);
};
void speak_chinese(void)
{
printf("speak chinese!\n");
}
void eat_bread(void)
{
printf("eat bread!\n");
}
struct person *init_person(void)
{
struct person *person = NULL;
person = (struct person *)malloc(sizeof(struct person));
if(!person){
printf("alloc memroy failed.\n");
return NULL;
}
person->name = "AndyLiu";
person->age = 38;
person->speak = speak_chinese;
person->eat = eat_bread;
printf("name is %s, age is %d\n", person->name, person->age);
return person;
}
void free_person(struct person *person)
{
if(person != NULL){
free(person);
person = NULL;
}
}
int main(void)
{
struct person *chinese_person;
if(chinese_person){
chinese_person->speak();
chinese_person->eat();
free_person(chinese_person);
}
return 0;
}