main.cpp

这是我的第一个小学期程序设计的程序

#include "StdAfx.h"
#include "Main.h"
int Book::GetCount(void)
{
	return count;
}
/*是否为空*/
bool Book::IsEmpty(void)
{
	return  count == 0;
}
	/*是否为尾*/
bool Book::IsEnd(void)
{
	return curcard == last;
}
/*定位第一页*/
bool Book::ToBegin(void)
{
	if(IsEmpty() || curcard == head)
		return false;
	curcard =  head;
	return true;
}
/*定位最后页*/
bool Book::ToEnd(void)
{
	if(IsEmpty() || curcard == last)
		return false;
	curcard =  last;
	return true;
}
/*上一页*/
bool Book::Prev(void)
{
	if(IsEmpty() || curcard == head)
		return false;
	if( curcard !=  head)
	{
		curcard =  curcard->prev;
	}
	return true;
}
/*下一页*/
bool Book::Next(void)
{
	if(IsEmpty() || curcard == last)
		return false;
	if(curcard !=  last)
	{
		curcard =  curcard->next;
	}
	return true;
}
void Book::Show(void)
{
	if(IsEmpty())
	{
		printf("No record\n");
		return ;
	}
	printf("%s %s %s %s\n",  curcard->person.name,
		curcard->person.address,
		curcard->person.phone,
		curcard->person.postcode);
}


/*功能实现*/
/*添加人员*/
bool Book::NewPerson(Card *pCard)
{
	assert(pCard != NULL);
	if(!IsEmpty())
	{
		pCard->next =  last->next;
		pCard->prev =  last;
		last->next = pCard;
		last = pCard;
	}
	else
	{
		head = pCard;
		last = pCard;
	}
	curcard = pCard;
	++ count;
	return true;
}
/*插入人员*/
bool Book::InsertPerson(Card *pCard)
{
	assert(pCard != NULL);
	if(!IsEmpty())
	{
		pCard->next =  curcard->next;
		pCard->prev =  curcard;
		if(curcard != last)
		{
			curcard->next->prev = pCard;
		}
		else
		{
			last = pCard;
		}
		curcard->next = pCard;

	}
	else
	{
		head = pCard;
		last = pCard;
	}
	curcard = pCard;
	++ count;
	return true;
}
/*删除人员*/
Card* Book::DeletePerson(void)
{
	Card *pCard = NULL;
	if(!IsEmpty())
	{
		pCard =  curcard;
		if( curcard !=  head &&  curcard !=  last)
		{
			curcard->prev->next =  curcard->next;
			curcard->next->prev =  curcard->prev;
			curcard =  curcard->next;
		}
		else if( curcard !=  head &&  curcard ==  last)
		{
			curcard->prev->next = NULL;
			curcard =  curcard->prev;
			last =  curcard;
		}
		else if( curcard ==  head &&  curcard !=  last)
		{
			curcard->next->prev = NULL;
			curcard =  curcard->next;
			head =  curcard;
		}
		else if( curcard ==  head &&  curcard ==  last)
		{
			curcard =  head =  last = NULL;
		}
		-- count;
	}
	
	return pCard;
}
/*读入人员信息文件*/
bool Book::LoadFile(char *fn)
{
	FILE *fp = NULL;
	Card *pCard = NULL;
	int iSize, i;
	
	fp = fopen(fn, "r");
	if(fp == NULL)
		return false;
	fscanf(fp, "%d", &iSize);
	for(i = 0; i < iSize; i++)
	{
		pCard = (Card*)malloc(sizeof(Card));
		pCard->next = pCard->prev = NULL;
		fscanf(fp, "%s %s %s %s", pCard->person.name,
			pCard->person.address, pCard->person.phone,
			pCard->person.postcode);
		NewPerson(pCard);
	}
	
	fclose(fp);
	return true;
}

/*保存人员信息*/
bool Book::SaveFile(char *fn)
{
	if(IsEmpty())
	{
		return false;
	}
	Card *pCard = curcard;
	ToBegin();
	FILE *fp = NULL;
	Person *pPerson = NULL;
	int i;
	
	fp = fopen(fn, "w");
	if(fp == NULL)
		return false;
	fprintf(fp, "%d ", count);
	for(i = 0; i < count; i++)
	{
		pPerson = GetCurPerson();
		if(*pPerson->name == '\0') 
			strcpy(pPerson->name, "*");
		if(*pPerson->address == '\0') 
			strcpy(pPerson->address, "*");
		if(*pPerson->phone == '\0') 
			strcpy(pPerson->phone, "*");
		if(*pPerson->postcode == '\0') 
			strcpy(pPerson->postcode, "*");
		fprintf(fp, "%s %s %s %s ", pPerson->name,
				pPerson->address, pPerson->phone,
				pPerson->postcode);
		Next();
	}
	curcard = pCard;
	
	fclose(fp);
	return true;
}
/*退出系统*/

/*初始化数据*/
bool Book::InitData(void)
{
	count = 0;
	curcard = NULL;
	head =  last = NULL;
	return true;
}
/*释放数据空间*/
bool Book::FiniData(void)
{
	ToBegin();
	while(!IsEmpty())
	{
		free (DeletePerson());
	}
	return true;
}

Person* Book::GetCurPerson(void)
{
	return &curcard->person;
}