急求用C语言编写的图书管理平台源代码(2)

{

if(strcmp(book[i].bookname,student[n].lendbook)==0)

{

book[i].turefalse=0;

fwrite(&book[i],sizeof(struct book),1,fp2);

continue;

}

fwrite(&book[i],sizeof(struct book),1,fp2);

}

fclose(fp);

fclose(fp2);

fp=fopen("book.txt","w");

fp2=fopen("bookl.txt","r");

for(i=0;fread(&book[i],sizeof(struct book),1,fp2)!=0;i++)

{

fwrite(&book[i],sizeof(struct book),1,fp);

}

fclose(fp);

fclose(fp2);

fopen("bookl.txt","w");

fclose(fp2);

printf("借书完毕，按任意键返回\n");

getch();

return;

}

}

printf("不存在这样的书，任意键返回\n");

fclose(fp);

getch();

return;

}

}

printf("你的密码不存在，请申请新卡,按任意键返回\n");

fclose(fp);

getch();

}

carcount()

{

FILE *fp;

int i,n=0;

fp=fopen("car.txt","r");

for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++)

{

printf("第%d张卡<卡号：%d 姓名：%s 班级：%d>\n",i+1,car[i].carnum,car[i].studentname,car[i].studentclass);

n=n+1;

}

fclose(fp);

printf("目前共有%d本书\n",n);

printf("按任意键\n");

getch();

}

delcar()

{

FILE *fp,*fp2;

int i;

int carnum;

char choice;

fp=fopen("car.txt","r");

fp2=fopen("bookl.txt","w");

printf("请键入你要删除的密码\n");

printf("如果你键入的密码存在c图书管理系统代码，系统手动卸载该信息！如果不存在，系统不做任何改动\n");

scanf("%d",&carnum);

for(i=0;fread(&car[i],sizeof(struct car),1,fp)!=0;i++)

{

if(car[i].carnum!=carnum)

{

fwrite(&car[i],sizeof(struct car),1,fp2);

}

}

fclose(fp);

fclose(fp2);

printf("是否真的要删除该卡？删除后该书籍的所有信息将能够恢复《Y/N》\n");

scanf("%s",&choice);

if(choice=='y'||choice=='Y')

{

fp=fopen("car.txt","w");

fp2=fopen("bookl.txt","r");

for(i=0;fread(&car[i],sizeof(struct car),1,fp2)!=0;i++)

{

fwrite(&car[i],sizeof(struct car),1,fp);

}

fclose(fp);

fclose(fp2);

fp2=fopen("bookl.txt","w");

fclose(fp2);

printf("按任意键返回\n");

getch();

return;

}

else

{

printf("按任意键返回\n");

getch();

return;

}

}

addcar()

{

FILE *fp;

int i=0;

fp=fopen("car.txt","a+");

printf("请你键入密码\n");

scanf("%d",&car[i].carnum);

printf("请你键入学生姓名\n");

scanf("%s",car[i].studentname);

printf("请你键入班级\n");

scanf("%d",&car[i].studentclass);

fwrite(&car[i],sizeof(struct car),1,fp);

fclose(fp);

printf("输入完毕，任意键返回\n");

getch();

}

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