typedef使用大全2(结构体)

typedef使用大全2(结构体)
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#define S(s) printf("%s/n", #s); s

typedef struct _TS1{
int x, y;
} TS1, *PTS1, ***PPPTS1; // TS1是结构体的名称，PTS1是结构体指针的名称
// 也就是将结构体struct _TS1 命名为TS1,
// 将struct _TS1 * 命名为 PTS1
// 将struct _TS1 *** 命名为 PPPTS1

typedef struct { // struct后面的结构体说明也可以去掉
int x, y;
} TS2, *PTS2;

typedef PTS1 *PPTS1; // 定义PPTS1是指向PTS1的指针

typedef struct _TTS1{
typedef struct ITTS1 {
int x, y;
} iner;
iner i;
int x, y;
} TTS1;

//结构体内部的结构体也一样可以定义
typedef TTS1::ITTS1 ITS1;

void test_struct()
{
// 基本结构体重定义的使用
TS1 ts1 = {100, 200};
PTS1 pts1 = &ts1; // 完全等价于TS1* pts1 = &ts1;
PPTS1 ppts1 = &pts1; // 完全等价于TS1** ppts1 = &pts1;
PPPTS1 pppts1 = &ppts1; // 完全等价于 TS1*** pppts1 = &ppts1;

TS2 ts2 = {99, 88};
PTS2 pts2 = &ts2; // 完全等价于 TS2* pts2 = &ts2;

TTS1 itts1 = {{110, 220}, 10, 20};
Its1* rits1 = &itts1.i;
ITS1* &its1 = rits1; // 等价于 TTS1::ITTS1 *its1 = &(itts1.i);

printf("ts1/t = (%d, %d)/n*pts1/t = (%d, %d)/n"
"**ppts1/t = (%d, %d)/n***pppts1= (%d, %d)/n/n",
ts1.x, ts1.y, pts1->x, pts1->y,
(**ppts1).x, (**ppts1).y, (***pppts1).x, (***pppts1).y);
printf("ts2/t = (%d, %d)/n*pts2/t = (%d, %d)/n/n",
ts2.x, ts2.y, pts2->x, pts2->y);
printf("itts1/t = [(%d, %d), %d, %d]/n*its1/t = (%d, %d)/n/n",
itts1.i.x, itts1.i.y, itts1.x, itts1.y, its1->x, its1->y);

S(pts1->x = 119);
S(pts2->y = 911);
S(its1->x = 999);

printf("ts1/t = (%d, %d)/n*pts1/t = (%d, %d)/n"
"**ppts1/t = (%d, %d)/n***pppts1= (%d, %d)/n/n",
ts1.x, ts1.y, pts1->x, pts1->y,
(**ppts1).x, (**ppts1).y, (***pppts1).x, (***pppts1).y);
printf("ts2/t = (%d, %d)/n*pts2/t = (%d, %d)/n/n",
ts2.x, ts2.y, pts2->x, pts2->y);
printf("itts1/t = [(%d, %d), %d, %d]/n*its1/t = (%d, %d)/n/n",
itts1.i.x, itts1.i.y, itts1.x, itts1.y, its1->x, its1->y);

S((*ppts1)->y = -9999);
printf("ts1/t = (%d, %d)/n**ppts1/t = (%d, %d)/n/n",
ts1.x, ts1.y, (*ppts1)->x, (*ppts1)->y);

S((**pppts1)->x = -12345);
S((***pppts1).y = -67890);
printf("ts1/t = (%d, %d)/n*pts1/t = (%d, %d)/n"
"**ppts1/t = (%d, %d)/n***pppts1= (%d, %d)/n/n",
ts1.x, ts1.y, pts1->x, pts1->y,
(**ppts1).x, (**ppts1).y, (***pppts1).x, (***pppts1).y);
}