struct tag
{
	member-list;
}variable-list;

//舉例1
struct Stu
{
	char name[20];//名字
	int age;//年齡
	char sex[5];//性別
	char id[20];//學(xué)號(hào)
}；//分號(hào)不能丟

//舉例2
struct Stu
{
	char name[20];//名字
	int age;//年齡
	char sex[5];//性別
	char id[20];//學(xué)號(hào)
}s1,s2,s3；//定義了3個(gè)結(jié)構(gòu)體類型的變量

//舉例3
typedef struct stu stu;

//舉例4
typedef struct stu
{
	char name[20];
	int age;
	char sex[8];
	float score;
}stu;

int main()
{
	struct stu stu4;//局部變量
	struct stu stu5;
	stu stu6;//全局變量
	return 0;
}

struct Point
{
	int x;
	int y;
}p1; //聲明類型的同時(shí)定義變量p1

struct Point p2; //定義結(jié)構(gòu)體變量p2

//初始化：定義變量的同時(shí)賦初值。
struct Point p3 = { x, y };

struct Stu //類型聲明
{
	char name[15];//名字
	int age; //年齡
};
struct Stu s = { "zhangsan", 20 };//初始化

struct Node
{
	int data;
	struct Point p;
	struct Node* next;
}n1 = { 10, {4,5}, NULL }; //結(jié)構(gòu)體嵌套初始化

struct Node n2 = { 20, {5, 6}, NULL };//結(jié)構(gòu)體嵌套初始化

struct S s;
strcpy(s.name, "zhangsan");//使用.訪問(wèn)name成員
s.age = 20;//使用.訪問(wèn)age成員

struct Stu
{
	char name[20];
	int age;
};
void print(struct Stu* ps)
{
	printf("name = %s age = %d\n", (*ps).name, (*ps).age);
//使用結(jié)構(gòu)體指針訪問(wèn)指向?qū)ο蟮某蓡T
	printf("name = %s age = %d\n", ps->name, ps->age);
}

struct point
{
	int x;
	int y;
}p1 = {10,20};

struct s//結(jié)構(gòu)體
{
	char c;
	struct point sp;
	double d;
	char arr[20];//字符串
};

void print1(struct s ss)//傳參結(jié)構(gòu)體
{
	printf("%c\n", ss.c);
	printf("%d\n", ss.sp.x);
	printf("%d\n", ss.sp.y);
	printf("%lf\n", ss.d);
	printf("%s\n", ss.arr);
}
int main()
{
	struct point p1 = { 100, 200 };//定義1個(gè)變量，并初始化
	struct s ss = { 'w',{100,20},5.5,"hello" };//初始化
	ss.c = 'b';
	ss.sp.x = 1000;
	ss.sp.y = 2000;
	ss.d = 3.14;
	//ss.arr = "wolrd";錯(cuò)誤的方法
	strcpy(ss.arr, "world");//字符串賦值函數(shù)
	print1(ss);//打印結(jié)構(gòu)體變量
}

struct point
{
	int x;
	int y;
}p1 = {10,20};

struct s
{
	char c;
	struct point sp;
	double d;
	char arr[20];//字符串
};
void print2(struct s* ss)//傳參地址
{
	printf("%c\n", ss->c);
	printf("%d\n", ss->sp.x);
	printf("%d\n", ss->sp.y);
	printf("%lf\n", ss->d);
	printf("%s\n", ss->arr);
}
int main()
{
	struct s ss = { 'w',{100,20},5.5,"hello" };//初始化
	ss.c = 'b';
	ss.sp.x = 1000;
	ss.sp.y = 2000;
	ss.d = 3.14;
	//ss.arr = "wolrd";錯(cuò)誤的方法
	strcpy(ss.arr, "world");
	print2(&ss);//打印結(jié)構(gòu)體變量
}