【C】C语言结构体指针的语法

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

struct AGE
{
    int year;
    int month;
    int day;
};

struct Student
{
    char *name;
    int num;
    struct AGE birthday;
    float score;
};

int main()
{
    // 注意写法1与写法2 不能混用
    // 写法1
    struct Student* stu = NULL;
    stu = (struct Student *)malloc(sizeof(struct Student));
    (*stu).num = 12;
    printf("%d\n", (*stu).num);

    // 写法2
    struct Student *stu1 = (struct Student *)malloc(sizeof(struct Student));
    stu1->name = "jack";
    printf("%s\n", stu1->name);

    return 0;
}