第一题：
要求你设计一个能够保存
图书信息的结构。图书属性包括：书名（title）、作者（author）和单价信息（
price），并按照下面要求完成对于各种图书的相关操作。
/*
struct books {
char title[100];
char author[20];
double price;
} doyle = { "My life as a budgie", "Mack Tom", 14.6 };
int main(void) {
struct books dicken = { "Thinking in
C++", "Stephen Prata", 78 };
struct books panshin = { .title = "
C++ Primer", .author = "Stanley Lippman",
.price = 92.5 };
printf("The title is :%s\nThe author is :%s\nThe price is :%lf\n",
doyle.title, doyle.author, doyle.price);
printf("\n");
printf("The title is :%s\nThe author is :%s\nThe price is :%lf\n",
dicken.title, dicken.author, dicken.price);
printf("\n");
printf("The title is :%s\nThe author is :%s\nThe price is :%lf\n",
panshin.title, panshin.author, panshin.price);
printf("\n");
printf("“Thinking in C++”这本书的价格调整后为：\n");
printf("\n");
printf("The title is :%s\nThe author is :%s\nThe price is :%lf\n",
dicken.title, dicken.author, dicken.price = 85);
return EXIT_SUCCESS;
}
*/
第二题：
为上面的关于图书的程序，添加三个函数：
/*(1)编写显示图书信息函数show()。参数为结构的指针。显示图书信息的结构如下：
The title is :My life as a budgie
The author is :Mack Tom
The price is :14.6
#include
#include
struct Library {
const char title[20];
const char author[10];
double price;
} panshin;
void show(struct Library *doy) {
printf("The title is: %s\n The author is : %s\n The price is : %.1lf",doy->title,
doy->author, doy->price);
}
int main(void) {
struct Library doyle = { "My life as a budgie", "Mack Tom", 14.6 };
show(&doyle);
return EXIT_SUCCESS;
}*/
/*(2)编写初始化结构变量函数init()，参数为结构的指针。函数功能是将结构变量中的成员进行初始化。
#include
#include
struct Library {
const char title[20];
const char author[10];
double price;
} panshin;
void init(struct Library *doyle, struct Library *dicken, struct Library *panshin) {
doyle ->title;
dicken ->author;
panshin ->price;
}
int main(void) {
struct Library doyle = { "My life as a budgie", "Mack Tom", 14.6 };
struct Library dicken ={ "Thinking in C++", "Stephen Prata", 78 };
struct Library panshin = { "C++ Prinner", "Stanley Lippman", 92.5 };
init(&doyle,&dicken,&panshin);
printf("The title is: %s\n The author is : %s\n The price is : %.1lf",
doyle->title, doyle->author, doyle->price);
printf("The title is: %s\n The author is : %s\n The price is : %.1lf",
dicken->title, dicken->author, dicken->price);
printf("The title is: %s\n The author is : %s\n The price is : %.1lf",
panshin->title, panshin->author, panshin->price);
return EXIT_SUCCESS;
}
*/
/*(3)编写从键盘上接受图书信息的函数input()，参数为结构的指针。函数的功能是从键盘上接收相关图
书信息，并将信息保存到指针所执行的图书结构变量里。
#include
#include
struct Library {
const char title[20];
const char author[10];
double price;
};
void input(struct Library *doyle,struct Library dicken,){
scanf("%s%s%lf", doyle->title, doyle->author,&doyle->price);
scanf("%s%s%lf",dicken->title, dicken->author, &dicken->price);
scanf("%s%s%lf", panshin->title, panshin->author, &panshin->price);
}
int main(void) {
struct Library doyle;
struct Library dicken;
struct Library panshin ;
input(&doyle,&dicken,&panshin);
printf("The title is: %s\n The author is : %s\n The price is : %.1lf",
doyle->t