C语言结构体小栗子

若想实现以下功能

int main() {
//    printf("Hello, World!\n");
    char titile[10][100];
    char author[10][100];
    strcpy(titile[0],"shuihu");
    strcpy(author[0],"luo");
    strcpy(titile[1],"sanguo");
    strcpy(author[1],"san");
    int i;
    for ( i = 0; i <2 ; ++i) {
        printf("%s %s\n",titile[i],author[i]);
    }
 
    return 0;
}

使用结构体

struct book{
    char title[100];
    char author[100];
};
 
int main(void ) {
//    printf("Hello, World!\n");
    struct book books[10];
    strcpy(books[0].title, "shuihu");
    strcpy(books[0].author, "luo");
    strcpy(books[1].title, "sanguo");
    strcpy(books[1].author, "san");
    int i;
    for (i = 0; i < 2; ++i) {
        printf("%s %s\n", books[i].title, books[i].author);
    }
    
 
    return 0;
}

 可以把struct book当场一种结构体

typedef int ABC;//ABC是Int的别名

ABC s=12;//s=12

typedef相当于是给变量类型取别名

 

 一般的结构体可以这样写

 简单的结构体加指针

 

 

 
typedef int ABC;//ABC是Int的别名
     struct book{
    char title[100];
    char author[100];
} ;//这样子写不能同时申明变量
typedef struct book book;
int main(void ) {
//    printf("Hello, World!\n");
    struct book books[10];
    book *b=&books[0];
//    book books[10];//与上一句含义相同
    ABC s=123;
    strcpy(books[0].title, "shuihu");
    strcpy(books[0].author, "luo");
    strcpy(books[1].title, "sanguo");
    strcpy(books[1].author, "san");
    int i;
    for (i = 0; i < 2; ++i) {
        printf("%s %s\n", books[i].title, books[i].author);
    }
    printf("\ns=%d",s);
    printf("\nb.title=%s\n",b->title);
    printf("\nb.title=%s\n",(*(b+1)).title);
 
    return 0;
}