Demostración de la estructura del lenguaje C

 convencional

#include <stdio.h>
#include <windows.h>
#define MAX 10
struct Books{
    char name[20];
    char about[200];
    double money;
} book={ "悲惨世界","雨果作品，简述了.......",16.01};
int main(void){
    SetConsoleOutputCP(65001);
   printf("书名：%d\n简介：%d\n价格 %f\n",book.name,book.about,book.money);
}

 Agregar

#include <stdio.h>
#include <windows.h>
#define MAX 10
struct Books{
    char name[20];
    char about[200];
    double money;
};
int main(void){
    SetConsoleOutputCP(65001);
    struct Books book1;
    struct Books book2;  

    strcpy(book1.name,"笔墨纸砚");
    strcpy(book1.about,"中国文房四宝缺一不可");
    book1.money=12.56;

    strcpy(book2.name,"上海1943");
    strcpy(book2.about,"战争年代哪些事");
    book2.money=10.22;
    printf("书名：%s\n简介：%s\n价格 %f\n",book1.name,book1.about,book1.money);
    printf("书名：%s\n简介：%s\n价格 %f\n",book2.name,book2.about,book2.money);
}

 Estructuras como argumentos de función

#include <stdio.h>
#include <windows.h>
#define MAX 10
struct Books{
    char name[20];
    char about[200];
    double money;
};
void console(struct Books book){//打印
    printf("书名：%s\n简介：%s\n价格 %f\n",book.name,book.about,book.money);
}
int main(void){
    SetConsoleOutputCP(65001);
    struct Books book1;
    struct Books book2;  

    strcpy(book1.name,"笔墨纸砚");
    strcpy(book1.about,"中国文房四宝缺一不可");
    book1.money=12.56;

    strcpy(book2.name,"上海1943");
    strcpy(book2.about,"战争年代哪些事");
    book2.money=10.22;
    console(book1);
    console(book2);
}

puntero a estructura

#include <stdio.h>
#include <windows.h>
#define MAX 10
struct Books{
    char name[20];
    char about[200];
    double money;
};
void console(struct Books *book){//打印
    strcat(book->name,"---改变值");
    printf("书名：%s\n简介：%s\n价格 %f\n",book->name,book->about,book->money);
}
int main(void){
    SetConsoleOutputCP(65001);
    struct Books book1;
    struct Books book2;  

    strcpy(book1.name,"笔墨纸砚");
    strcpy(book1.about,"中国文房四宝缺一不可");
    book1.money=12.56;

    strcpy(book2.name,"上海1943");
    strcpy(book2.about,"战争年代哪些事");
    book2.money=10.22;
    console(&book1);
    console(&book2);
}

Una estructura hace referencia a otra estructura

#include <stdio.h>
#include <windows.h>
#define MAX 10
struct Student{
    int age;
    char name[20];
} ;
struct Books{
    char name[20];
    char about[200];
    double money;
    struct Student st;  //包含其他的结构体 之前，本结构体要在被包含结构体之后定义
} ;
int main(void){
    SetConsoleOutputCP(65001);
    struct Books book1;
    strcpy(book1.name,"笔墨纸砚");
    strcpy(book1.about,"中国文房四宝缺一不可");
    book1.money=12.56;
    book1.st.age=1;
    strcpy(book1.st.name,"小名");
    
    printf("书名：%s\n简介：%s\n价格 %f\n小朋友年龄：%d\n小朋友的名字:%s",book1.name,book1.about,book1.money,book1.st.age,book1.st.name);
    
}

 anidamiento de estructura

#include <stdio.h>
#include <windows.h>
#define MAX 10

struct Books{
    char name[20];
    char about[200];
    double money;
    struct Student{
        int age;
        char name[20];
    } st;
} ;
int main(void){
    SetConsoleOutputCP(65001);
    struct Books book1;
    strcpy(book1.name,"笔墨纸砚");
    strcpy(book1.about,"中国文房四宝缺一不可");
    book1.money=12.56;
    book1.st.age=1;
    strcpy(book1.st.name,"小名");
    
    printf("书名：%s\n简介：%s\n价格 %f\n小朋友年龄：%d\n小朋友的名字:%s",book1.name,book1.about,book1.money,book1.st.age,book1.st.name);
    
}