Question

求C语言高手编程 急急急！！！！

用C语言编写一个程序 实现如下功能：
1，创建一个图书结构体book。结构体应包含以下几个成员：图书编号，图书名称，作者名，出版社，图书价格。个成员变量名称自定。
2，编写函数newlib，用于新建一个文件以保存若干条图书信息。
3，编写函数appendbook，用于在创建好的文件中新增一条图书记录，包括图书编号，书名，作者名，出版社，图书价格等信息。
4，编写函数delbook,用于删除指定图书编号的相应记录。
5，编写函数searchbook，用于查询指定图书编号或者指定书名的相应记录。
6，对图书进行排序，分别编写函数sortbyid和sortbyprice,将图书记录按照编号的升序进行排序，以及按图书的价格的升序进行排序。

急急急！！！！！！做的好有追加

Answer 1

还未完成,要先睡觉了,明天继续:

再更新一遍，还没全写好

/****************************************
用C语言编写一个程序 实现如下功能：
1，创建一个图书结构体book。结构体应包含以下几个成员：图书编号，图书名称，作者名，出版社，图书价格。个成员变量名称自定。
2，编写函数newlib，用于新建一个文件以保存若干条图书信息。
3，编写函数appendbook，用于在创建好的文件中新增一条图书记录，包括图书编号，书名，作者名，出版社，图书价格等信息。
4，编写函数delbook,用于删除指定图书编号的相应记录。
5，编写函数searchbook，用于查询指定图书编号或者指定书名的相应记录。
6，对图书进行排序，分别编写函数sortbyid和sortbyprice,将图书记录按照编号的升序进行排序，以及按图书的价格的升序进行排序。 ****************************************/
#include <stdio.h>
#include <malloc.h>
#include <stdlib.h>

#define ID_LEN 8
#define NAME_LEN 20
#define AUTHOR_LEN 12
#define CONCERN_LEN 20
#define PRICE_LEN 1
#define FNAME_LEN 20

typedef struct book
{
char *book_id;
char *book_name;
char *book_author;
char *book_concern;
int *book_price;
} BOOK;

FILE *newlib(char *fname);
BOOK *appendbook(FILE *fp);

void delbook(FILE *fp, char *fname, char *book_id);
void searchbook(char *book_id_or_name);

void sortbyid(FILE *);
void sortbyprice(FILE *);

void booklib_out(FILE *);

int main()
{
FILE *booklib;
char *lib_name;
BOOK *newbook,*book1;

/*********************************
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*********************************/

//Test newlib()
booklib = newlib(lib_name);

//Test appendbook()
newbook = appendbook(booklib);

//Test delbook();
/* book1 = newbook;
delbook(booklib,lib_name,book1->book_id);

//Test searchbook();
searchbook(book1->book_id);
searchbook(book1->book_name);

//Test sortbyid();
sortbyid(booklib);
booklib_out(booklib);

//Test sortbyprice();
sortbyprice(booklib);
booklib_out(booklib);*/

return 0;

}

FILE *newlib(char *fname)
{
FILE *fp = NULL;
char ch;
unsigned int n,i;

BOOK *newbook;

fname = (char *)malloc(FNAME_LEN*sizeof(char));

newbook = (BOOK *)malloc(1*sizeof(BOOK));
newbook->book_id = (char *)malloc(ID_LEN*sizeof(char));
newbook->book_name = (char *)malloc(NAME_LEN*sizeof(char));
newbook->book_author = (char *)malloc(AUTHOR_LEN*sizeof(char));
newbook->book_concern = (char *)malloc(CONCERN_LEN*sizeof(char));
newbook->book_price = (int *)malloc(PRICE_LEN*sizeof(int));

printf("Please input the book_lib's name:");
scanf("%s",fname);

printf("\n%s\n",fname);

fp = fopen(fname,"w+");
if(!fp)
{
printf("Book lib create fail!");
exit(0);
}

printf("\nPlease input how many books in the lib:");
scanf("%d",&n);

for(i = 0; i < n; i++)
{
printf("\nPlease input the %dth book's information:\n",i+1);
printf("%38s","book_id:");
scanf("%s",newbook->book_id);
fprintf(fp,"%s ",newbook->book_id);

getchar();

printf("%38s","book_name:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_name);
fprintf(fp,"%s ",newbook->book_name);*/

printf("%38s","book_author:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_author);
fprintf(fp,"%s ",newbook->book_author);*/

printf("%38s","book_concern:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_concern);
fprintf(fp,"%s ",newbook->book_concern);*/

printf("%38s","book_price:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp,"\n");

/*
scanf("%d",newbook->book_price);
fprintf(fp,"%d\n",*newbook->book_price);*/

}

return fp;
}

BOOK *appendbook(FILE *fp)
{
char ch;

BOOK *newbook;

newbook = (BOOK *)malloc(1*sizeof(BOOK));
newbook->book_id = (char *)malloc(ID_LEN*sizeof(char));
newbook->book_name = (char *)malloc(NAME_LEN*sizeof(char));
newbook->book_author = (char *)malloc(AUTHOR_LEN*sizeof(char));
newbook->book_concern = (char *)malloc(CONCERN_LEN*sizeof(char));
newbook->book_price = (int *)malloc(PRICE_LEN*sizeof(int));

printf("\nPlease input the new book's information:\n");
printf("%38s","book_id:");
scanf("%s",newbook->book_id);
fprintf(fp,"%s ",newbook->book_id);

getchar();

printf("%38s","book_name:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_name);
fprintf(fp,"%s ",newbook->book_name);*/

printf("%38s","book_author:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_author);
fprintf(fp,"%s ",newbook->book_author);*/

printf("%38s","book_concern:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp," ");

/*
scanf("%s",newbook->book_concern);
fprintf(fp,"%s ",newbook->book_concern);*/

printf("%38s","book_price:");
while( (ch = getchar())!='\n' )
fputc(ch,fp);
fprintf(fp,"\n");

/*
scanf("%d",newbook->book_price);
fprintf(fp,"%d\n",*newbook->book_price);*/

return newbook;
}

void delbook(FILE *fp, char *fname, char *book_id)
{
char *s,ch;
FILE *fp1;
rename(fname,"f_backup.txt");
fp1 = fopen(fname,"w");
while( (fscanf(fp,"%s",s) != EOF) && ((ch = getchar()) != EOF) )
{
if( !strcmp(s,book_id) )
{
while( getchar() != '\n' )
;
}
if(ch != '\n' )
fprintf(fp1,"%s ",s);
else
fprintf(fp1,"\n");
}
}
/*
void searchbook(char *book_id_or_name)
{}

void sortbyid(FILE *fp)
{}

void sortbyprice(FILE *fp)
{}

void booklib_out(FILE *fp)
{}*/