#includeusing namespace std;

const int N = 25;//定义20本图书

struct Book {

char name[25];

char author[15];

char price[7];

char publisher[20];

char isbn[20];

};

int ii = 19;

Book book[N] = { { "红与黑","司汤达","26.00","长江文艺出版社","978-7-5354-5003-6" },

{ "张伯苓画传","梁吉生","35.00","四川教育出版社","978-7-5408-5623-6" },

{ "四世生花","沈煜伦","49.80","湖南文艺出版社","978-7-5404-7718-9" },

{ "北大人的礼仪课","段建林","39.80","外文出版社","978-7-119-08439-8" },

{ "悲惨世界","雨果","44.00","北方文艺出版社","978-7-5317-3049-1" },

{ "好吗好的","大冰","39.00","湖南文艺出版社","978-7-5404-7689-2" },

{ "千秋","落落","28.80","长江文艺出版社","978-7-5354-5060-9" },

{ "陪安东尼度过漫长岁月","安东尼","28.80","长江文艺出版社","978-7-5354-6205-3" },

{ "刘邦正传","周启元","52.80","中国文史出版社","978-7-5034-5145-4" },

{ "小王子","圣埃克苏佩里","24.00","湖南少儿出版社","978-7-5562-0考试界-1" },

{ "围城","钱钟书","19.00","人民文学出版社","978-7-02-009000-6" },

{ "解忧杂货铺","东野圭吾","39.50","南海出版社","978-7-5442-7087-3" },

{ "追风筝的人","胡赛尼","29.00","上海人民出版社","978-7-208-06164-4" },

{ "摆渡人","麦克福尔","36.00","百花洲文艺出版社","978-7-550-01324-7" },

{ "神话","朱大可","35.00","东方出版社","978-7-5060-5278-8" },

{ "人民的名义","周梅森","46.90","北京十月文艺出版社","978-7-5302-1619-4" },

{ "夜谭十记","马识途","29.80","京华出版社","978-7-5502-2550-3" },

{ "悟空传","今何在","32.00","北京联合出版社","978-7-5502-7767-0" },

{ "英雄传","宫部美雪","29.90","青岛出版社","978-7-5436-6784-6" },

{ "白夜行","东野圭吾","39.50","南海出版社","978-7-5442-5860-9" } };

void inquiremenu() {

system("cls");

int y = 0;

printf("************");

printf("1.书号查询");

printf("2.书名查询");

printf("3.作者查询");

printf("4.出版社查询");

printf("请选择(1~4): 回车确定");

scanf("%d", &y);

int i;

switch (y) {

case 1: {

char x[20];

system("cls");

printf("请输入查找书号");

scanf("%s", &x);

bool fg = 0;

for (i = 0; i    if (strcmp(book[i].isbn,x) == 0) {

printf("已找到");

fg = 1;

printf("书名:%s,作者:%s,价格:%s,出版社:%s,书号:%s", book[i].name, book[i].author, book[i].price, book[i].publisher, book[i].isbn);

}

}//按书号查询

if (!fg)printf("未找到/n");

break;

}

case 2: {

char j[25];

system("cls");

printf("请输入查找书名");

scanf("%s", &j);

bool fg = 0;

for (i = 0; i    if (strcmp(j, book[i].name) == 0) {

printf("已找到");

fg = 1;

printf("书名:%s,作者:%s,价格:%s,出版社:%s,书号:%s", book[i].name, book[i].author, book[i].price, book[i].publisher, book[i].isbn);

}

}//按书名查询

if (!fg)printf("未找到/n");

break;

}

case 3: {

char k[15];

system("cls");

printf("请输入查找作者");

scanf("%s", &k);

bool fg = 0;

for (i = 0; i    if (strcmp(k, book[i].author) == 0) {

printf("已找到");

fg = 1;

printf("书名:%s,作者:%s,价格:%s,出版社:%s,书号:%s", book[i].name, book[i].author, book[i].price, book[i].publisher, book[i].isbn);

}

}//按作者查询

if (!fg)printf("未找到/n");

break;

}

case 4: {

char z[20];

system("cls");

scanf("%s", &z);

bool fg = 0;

printf("请输入查找出版社");

for (i = 0; i    if (strcmp(z, book[i].publisher) == 0) {

printf("已找到");

fg = 1;

printf("书名:%s,作者:%s,价格:%s,出版社:%s,书号:%s", book[i].name, book[i].author, book[i].price, book[i].publisher, book[i].isbn);

}

}//按出版社查询

if (!fg)printf("未找到/n");

break;

}

}

}//查询函数

void addbook() {

system("cls");

printf("请输入书名");

scanf("%s", &book[ii + 1].name);

printf("请输入作者");

scanf("%s", &book[ii + 1].author);

printf("请输入价格");

scanf("%s", &book[ii + 1].price);

printf("请输入出版社");

scanf("%s", &book[ii + 1].publisher);

printf("请输入书号");

scanf("%s", &book[ii + 1].isbn);

++ii;

}//添加图书

void information() {

int i;

for (i = 0; i   printf("");

printf("书名:%s,作者:%s,价格:%s,出版社:%s,书号:%s", book[i].name, book[i].author, book[i].price, book[i].publisher, book[i].isbn);

}

}//显示所有图书信息

int main() {

int accept, input_error_flag;

system("cls");

printf("******图书查询系统******");

printf("************************");

printf("******1.图书查询*******");

printf("******2.添加图书***");

printf("******3.图书信息*****");

printf("******4.退     出******");

printf("************************");

printf("****请输入选择(1~4):*****");

input_error_flag = 0;

do {

if (input_error_flag == 1)

printf("输入错误!!!  重新输入:");

printf("输入:1~4):");

fflush(stdin);//输入缓冲区清空

scanf("%d", &accept);

input_error_flag = 1;

} while (accept 4);

switch (accept)

{

case 0:

case 1:inquiremenu(); break;

case 2:addbook(); break;

case 3:information(); break;

case 4:printf("退出"); break;

default:system("cls");

}

return 0;

}