C语言 结构体 调用 按地址 指针 套用

#include

typedef struct stu
{
   int id;
   char name[15];
   int age;
   char sex;
}stu;

void dis_stud(stu *s)
{
    printf("%ld\n",sizeof(s));

    printf("%d  %s  %d  %c\n",s->id, s->name, s->age, s->sex);

    s->age = 26;

}

int main()
{
    stu s1 ={1, "tom", 32, 'm'};
    stu s2 ={2, "moe", 12, 'w'};

    dis_stud(&s1);
    dis_stud(&s1);
  return 0;
}

结构体 套用

#include
#include

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

typedef struct stu
{
   int id;
   char name[15];
   int age;
   char sex;
   struct data birth;
}stu;

void dis_stud(stu *s)
{

    printf("%d  %s  %d  %c\n",s->id, s->name, s->age, s->sex);
    printf("%4d-%2d-%2d\n",s->birth.year, s->birth.month, s->birth.day);

}

int main()
{
    stu s ={1, "tom",19,'w',{2000,9,21}};
    dis_stud(&s);

    return 0;
}