1 /*
 2 *该实例程序用来显示如何在方法体中传递结构体参数
 3  该传递参数的方法是通过指针的形式对参数进行传递
 4  getinfo()方法用于对结构体指针进行赋值操作
 5  showinfo()方法用于对结构体进行输出 
 6 */ 
 7 #include <stdio.h>
 8 #include <stdlib.h>
 9 #define MAX_SIZE 2
10 #define MAX_TITLE_SIZE 30
11 #define MAX_AUTHOR_SIZE 30
12 //构造一个Book 类型的结构体
13  /*
14   *title 为char类型
15    author char 类型
16    price float 类型 
17  */ 
18 struct Book 
19 {
20     char title[MAX_TITLE_SIZE];
21     char author[MAX_AUTHOR_SIZE];
22     float price;
23     
24 }; 
25 /*
26   声明getinfo() showinfo()方法 
27 */
28 struct Book  * getinfo(struct Book *lib);
29 struct Book * showinfo(struct Book  *lib);
30 int main()
31 {
32     struct Book *lib;
33     lib=(struct Book *)malloc(sizeof(struct Book));
34     lib=getinfo(lib);
35     showinfo(lib);
36     return 0;    
37 }
38 struct Book * getinfo(struct Book *lib)
39 {
40     printf("请输入书名:\t");
41     gets(lib->title);
42     printf("请输入作者名:\t");
43     gets(lib->author);
44     printf("请输入书的价格:\t");
45     scanf("%f",&(lib->price));
46     return lib;
47 }
48 struct Book * showinfo(struct Book *lib)
49 {
50     printf("the title is %s \t and the author is %s \t and the price is %f ",
51                             lib->title,lib->author,lib->price);
52 }