结构体作为函数参数

结构体作为函数参数

你可以将结构体作为函数参数传递，其使用方式和将其他任何变量或指针作为参数传递非常相似。你可以以同样的方式访问结构变量，就如在上面的例子中显示的一样：

    #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;
    }

编译和执行上面的代码，执行结果如下：

    Book title : Learn C++ Programming
    Book author : Chand Miyan
    Book subject : C++ Programming
    Book id : 6495407
    Book title : Telecom Billing
    Book author : Yakit Singha
    Book subject : Telecom
    Book id : 6495700