typedef 使用大全2（结构体）

续 数组

#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);

}

http://blog.youkuaiyun.com/eion/article/details/14547