1 结构体#include 
     
      #include 
      
       using namespace std;void printBook( struct Book book );struct Book{    char title[50];    char author[50];    char subject[100];    int book_id;};int main(){    struct Book book1;    struct Book book2;    strcpy( book1.title, "Learn c++ Programming");    strcpy( book1.author, "Chand Miyan");    strcpy( book1.subject, "c++ Programming");    book1.book_id = 6495407;    strcpy( book2.title, "Telecom Billing");    strcpy( book2.author, "Yakit Singha");    strcpy( book2.subject, "Telecom");    book2.book_id = 6495700;    cout << book1.title << " " << book1.author << " " << book1.subject << " " << book1.book_id << endl;    cout << book2.title << " " << book2.author << " " << book2.subject << " " << book2.book_id << endl;    cout << "传入函数打印" << endl;    printBook(book1);    printBook(book2);}void printBook( struct Book book ){    cout << book.title << " " << book.author << " " << book.subject << " " << book.book_id << endl;}/* vim: set ts=4 sw=4 sts=4 tw=100 */
      
     

 

2 指向结构的指针#include 
     
      #include 
      
       using namespace std;typedef struct{    char title[50];    char author[50];    char subject[100];    int book_id;}Book;void printBook(Book *book);int main(){    Book book1, book2;    strcpy( book1.title, "Learn c++ Programming");    strcpy( book1.author, "Chand Miyan");    strcpy( book1.subject, "c++ Programming");    book1.book_id = 6495407;    strcpy( book2.title, "Telecom Billing");    strcpy( book2.author, "Yakit Singha");    strcpy( book2.subject, "Telecom");    book2.book_id = 6495700;    printBook(&book1);    printBook(&book2);    long int a = 100;    typedef long int *ptrLInt;        ptrLInt x;    x = &a;    cout << *x;}void printBook(Book *book){    //指向该结构的指针访问结构的成员，您必须使用 -> 运算符    cout << book->title << " " << book->author << " " << book->subject << " " << book->book_id << endl;}/* vim: set ts=4 sw=4 sts=4 tw=100 */