40.结构体套一级指针

#include
#include
struct Student{
	int age;
	char *name;
	int score;
};
int main()
{
	struct student *p;
	//需要给p分配内存
	p = (struct Student *)malloc(sizeof(struct Student));
	p->name = (char *)malloc(strlen("mike") + 1);
	if(p == NULL){
		printf("分配失败\n");
		return 0;
	}
	p->age = 18;
	strcpy(p->name, "mike");
	p->score = 59;
	
	printf("%d, %s, %d\n", p->age, p->name, p->score);
	
	
	if(p->name != NULL){
		free(p->name);
		p->name = NuLL;
	}
	
	if(p != NULL){
		free(p);
		p = NULL;
	}
	return 0;
}