bookmanage.cpp

纯C语言的图书管理系统

#include "stdafx.h"		
#include "BookManage.h"
#include <stdlib.h>
#include <string.h>
#include <iostream.h>

void CreateBook(BookRecType **head)
{
	char yn = 'y';
	BookRecType * CurrP=0/*指向当前节点的指针*/,*PreP=0/*前一个节点的指针*/;
	BookRecType * newnode;
	do
	{
		//此处添加输入图书信息实现代码
			//输入书信息	
		newnode = (BookRecType *) malloc(sizeof(BookRecType));
		newnode->next = NULL;
		printf("书号   书名       作者名     出版社   入库数量\n");
		scanf("%s%s",newnode->bno,newnode->bname);
		scanf("%s%s",newnode->author,newnode->press);
		scanf("%d",&newnode->storenum);
		newnode->borrownum=0;
			//添加到链表中
		newnode->next= *head;
		*head = newnode;
		/*for (CurrP = head ; CurrP!=NULL; PreP = CurrP,CurrP = CurrP->next)
		{
			if (atoi(CurrP->bno)>atoi(newnode->bno))//将新节点插在CurrP指向的节点前
			{
				if (CurrP == head)
				{
					newnode->next = CurrP;
					head = newnode;
				}
				else
				{
					newnode->next = CurrP;
					PreP->next = newnode;
				}
				break;
			}
		}
		if (head ==0) head = newnode;// 当链表为空(head=0)的处理
		if (head !=0 && CurrP == NULL) PreP->next=newnode;//表明循环正常退出，输入的书号最大就放在链表末尾
		*/

		printf("继续输入吗？ y/n: \n");
		cin>>yn;
	}while (yn == 'y'||yn == 'Y');
	for (CurrP = *head ; CurrP!=NULL; CurrP = CurrP->next)
	{
		printf("%5s%21s%9s%11s%8d%8d\n",CurrP->bno,CurrP->bname,CurrP->author,CurrP->press,CurrP->storenum,CurrP->borrownum);
	}
}

void SearchBook(BookRecType **head)
{
	int id=0;
	char content[21];
	char yn = 'y';
	do{
		printf("图书查找子模块\n");
		printf("--------------\n");
		printf("1.根据书号查找\n");
		printf("2.根据书名查找\n");
		printf("3.根据作者查找\n");
		printf("4.根据书版社查找\n");
		printf("--------------\n");
		printf("请选择： ");
		scanf("%d",&id);
		printf("请输入查找的内容：");
		scanf("%s",content);
		printf("%6s%22s%10s%22s%10s%10s\n","书号","书名","作者","出版社","藏书量","借出数量");
		SearchBookMode(head,id,content);
		printf("继续查找吗？ y/n: \n");
		cin>>yn;
	}while  (yn == 'y'||yn == 'Y');
}
void SearchBookMode(BookRecType **head,int id,char content[])
{
	BookRecType * CurrP/*指向当前节点的指针*/;
	char Bookstr[21];
	
	for (CurrP = *head ; CurrP!=NULL; CurrP = CurrP->next)
	{
		switch (id)
		{
		case 1:
			strcpy(Bookstr,CurrP->bno);
			break;
		case 2:
			strcpy(Bookstr,CurrP->bname);
			break;
		case 3:
			strcpy(Bookstr,CurrP->author);
			break;
		case 4:
			strcpy(Bookstr,CurrP->press);
			break;
		default:
			Bookstr[0] = '\0';
		}
		if (strcmp(content,Bookstr)==0)
		{
			printf("%6s%22s%10s%22s%10d%10d\n",CurrP->bno,CurrP->bname,CurrP->author,CurrP->press,CurrP->storenum,CurrP->borrownum);
		}
	}
}