C語(yǔ)言結(jié)構(gòu)體定義的三種方式

#include <stdio.h>struct student //結(jié)構(gòu)體類型的說明與定義分開。聲明{int age;  /*年齡*/float score; /*分?jǐn)?shù)*/char sex;   /*性別*/};int main (){struct student a={ 20,79,'f'}; //定義printf('年齡：%d 分?jǐn)?shù)：%.2f 性別：%c\n', a.age, a.score, a.sex );return 0;

#include <stdio.h>struct   //直接定義結(jié)構(gòu)體變量，沒有結(jié)構(gòu)體類型名。這種方式最爛{int age;float score;char sex;} t={21,79,'f'};int main (){printf('年齡：%d 分?jǐn)?shù)：%f 性別：%c\n', t.age, t.score, t.sex);return 0;}return 0;}}

struct book s1，s2，*ss；

struct book{ char … …. ….. }librar；

struct 結(jié)構(gòu)體名{成員列表；}變量名列表；//這里結(jié)構(gòu)體名是可以省的，但盡量別??；struct book{char title[MAXTITL];//一個(gè)字符串表示的titile 題目 ；char author[MAXAUTL];//一個(gè)字符串表示的author作者 ；float value;//一個(gè)浮點(diǎn)型表示的value價(jià)格；}s1，s2

struct book s1={//對(duì)結(jié)構(gòu)體初始化         'yuwen',//title為字符串         'guojiajiaoyun',//author為字符數(shù)組         22.5    //value為flaot型     };//要對(duì)應(yīng)起來，用逗號(hào)分隔開來，與數(shù)組初始化一樣；

struct date{    int year;    int month;    int day;};struct student{    char name[10];    struct date birthday;}student1;//若想引用student的出生年月日，可表示為；student.brithday.year；brithday是student的成員；year是brithday的成員；

char ss[20]={0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29};

printf('0x%02x,0x%02x,0x%02x\n',ps->addr,ps->name,ps->id);printf('PERSON長(zhǎng)度=%d字節(jié)\n',sizeof(PERSON));

typedef struct{    int  id;  char addr;  char name;}PERSON;

typedef struct{    char addr;  char name;    int  id;}PERSON;typedef struct{    char age;  PERSON  ps1;}STUDENT;

printf('0x%02x,0x%02x,0x%02x,0x%02x\n',stu->ps1.addr,stu->ps1.name,stu->ps1.id,stu->age);printf('STUDENT長(zhǎng)度=%d字節(jié)\n',sizeof(STUDENT));

//對(duì)于“一錘子買賣”，只對(duì)最終的結(jié)構(gòu)體變量感興趣，其中A、B也可刪，不過最好帶著  struct A{            struct B{               int c;           }  b;  }  a;  //使用如下方式訪問：a.b.c = 10;

a.b.c = 11;  printf('%d\n',a.b.c);  a.sb.c = 22;  printf('%d\n',a.sb.c);

struct s  {  char a;  short b;  int c;  }

int get_video(char **name, long *address, int *size, time_t *time, int *alg){    ...}int handle_video(char *name, long address, int size, time_t time, int alg){    ...}int send_video(char *name, long address, int size, time_t time, int alg){    ...}

struct video_info{    char *name;    long address;    int size;    int alg;    time_t time;};

printf('video name: %s\n', vinfo->name);long addr = vinfo->address;int size = vinfo->size;

int handle_video(char *name, long address, int size, time_t time, int alg);int send_video(char *name, long address, int size, time_t time, int alg);

int handle_video(struct video_info vinfo){    ...}int send_video(struct video_info vinfo){    ...}