C++结构体作为函数参数

#include <iostream>
#include <cstring>

using namespace std;
voID printBook( struct Books book );

struct Books {
   char  Title[50];
   char  author[50];
   char  subject[100];
   int   book_ID;
};

int main() {
   struct Books Book1;        // Declare Book1 of type Book
   struct Books Book2;        // Declare Book2 of type Book

   // book 1 specification
   strcpy( Book1.Title, "Learn C++ Programming");
   strcpy( Book1.author, "Chand Miyan"); 
   strcpy( Book1.subject, "C++ Programming");
   Book1.book_ID = 6495407;

   // book 2 specification
   strcpy( Book2.Title, "Telecom Billing");
   strcpy( Book2.author, "Yakit Singha");
   strcpy( Book2.subject, "Telecom");
   Book2.book_ID = 6495700;

   // Print Book1 info
   printBook( Book1 );

   // Print Book2 info
   printBook( Book2 );

   return 0;
}
voID printBook( struct Books book ) {
   cout << "Book Title : " << book.Title <<endl;
   cout << "Book author : " << book.author <<endl;
   cout << "Book subject : " << book.subject <<endl;
   cout << "Book ID : " << book.book_ID <<endl;
}