c语言编程.doc

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
structmbook
{
charnumber[10];//书号
charname[20];//书名
charauthor[20];//作者
charpublish[50];//出版社
intnum;//数量
floatprice;//价格
};
structmlibrary
{
intcount;//书的本数
structmbookbook[200];//最大可有100本书
}
library;
voidsave()//保存教材信息。
{
FILE*fp;
if((fp=fopen("library.doc","w"))==NULL)
{
printf("\n不能保存教材信息\n");
return;
}
fwrite(&library.count,sizeof(int),1,fp);
fwrite(library.book,sizeof(library.book[0]),library.count,fp);
fclose(fp);
}
voidbuy()
{
intn,i;
charname[20];
printf("请输入要购入的书名:\n");
scanf("%s",name);
for(i=0;i<library.count;i++)
if(strcmp(name,library.book[i].name)==0)
{
printf("请输入要购入的数量:\n");
scanf("%d",&n);
library.book[i].num+=n;
save();
}
else
{
inty=1,len=8;
system("cls");
while(y)
{
printf("\t请输入您的书籍的书号:");
scanf("%s",library.book[library.count].number);
printf("\t请输入书名:");
scanf("%s",library.book[library.count].name);
printf("\t请输入作者名:");
scanf("%s",library.book[library.count].author);
printf("\t请输入要购买的数量:");
scanf("%d",library.book[library.count].num);
printf("\t请输入出版社:");
scanf("%s",library.book[library.count].publish);
printf("\t请输入该书的价格:");
fflush(stdin);
scanf("%f",&library.book[library.count].price);
library.count++;
fflush(stdin);
scanf("%d",&y);
if(y!=1)
{
y=0;
break;
}
}
save();
}
}
voidputin()//定义录入函数
{
inty=1,len=8;
system("cls");
while(y)
{
printf("\t请输入您的书籍的书号:");
scanf("%s",library.book[library.count].number);
printf("\t请输入书名:");
scanf("%s",library.book[library.count].name);
printf("\t请输入作者名:");
scanf("%s",library.book[library.count].author);

printf("\t请输入出版社:");
scanf("%s",library.book[library.count].publish);
printf("\t请输入该书的价格:");
fflush(stdin);
scanf("%f",&library.book[library.count].price);
library.count++;
printf("\n是否继续录入(1.继续;0,退出录入):");
fflush(stdin);
scanf("%d",&y);
if(y!=1)
{
y=0;
break;
}
}
save();
}
voidsearch_by_name()//定义按书名查询
{
registe