[C++知识库]C语言：结构作为函数参数

您可以把结构作为函数参数，传参方式与其他类型的变量或指针类似。您可以使用上面实例中的方式来访问结构变量：

#include <stdio.h>
#include <string.h>
 
struct Books
{
   char  title[50];
   char  author[50];
   char  subject[100];
   int   book_id;
};
 
/* 函数声明 */
void printBook( struct Books book );
int main( )
{
   struct Books Book1;        /* 声明 Book1，类型为 Books */
   struct Books Book2;        /* 声明 Book2，类型为 Books */
 
   /* Book1 详述 */
   strcpy( Book1.title, "C Programming");
   strcpy( Book1.author, "Nuha Ali"); 
   strcpy( Book1.subject, "C Programming Tutorial");
   Book1.book_id = 6495407;
 
   /* Book2 详述 */
   strcpy( Book2.title, "Telecom Billing");
   strcpy( Book2.author, "Zara Ali");
   strcpy( Book2.subject, "Telecom Billing Tutorial");
   Book2.book_id = 6495700;
 
   /* 输出 Book1 信息 */
   printBook( Book1 );
 
   /* 输出 Book2 信息 */
   printBook( Book2 );
 
   return 0;
}
void printBook( struct Books book )
{
   printf( "Book title : %s\n", book.title);
   printf( "Book author : %s\n", book.author);
   printf( "Book subject : %s\n", book.subject);
   printf( "Book book_id : %d\n", book.book_id);
}

当上面的代码被编译和执行时，它会产生下列结果：

Book title : C Programming
Book author : Nuha Ali
Book subject : C Programming Tutorial
Book book_id : 6495407
Book title : Telecom Billing
Book author : Zara Ali
Book subject : Telecom Billing Tutorial
Book book_id : 6495700