phonebook.cpp

用C++实现的一个很简单的个人电话薄管理系统源代码

//*******************************************************************
/*****************   PhoneBook个人电话簿管理系统  ****************/
/*	作者:郭佩佩		*/
/*	学号:09002138	*/
/*	日期:2004/11/26	*/
//*******************************************************************
#include<iostream.h>
#include<fstream.h>
#include<conio.h>
#include<iomanip.h>
#include<string.h>
#include<stdlib.h>

struct record		//结构体类型定义
{
	char lastName[20];		//姓氏
	char firstName[15];		//名字
	char phoneNum[15];		//电话
	char mobile[15];		//手机
	record *next;
};

record *head;		//全局变量，链表头指针
record *current;	//全局变量，链表当前结点指针


//	函数原型声明
void handleChoice(int choice);
void addRecord();
void insertNode(record *newRecord);
record *posInsertPoint(char lastname[20]);
void makeNodeNewHead(record *newRecord);
void addNodeToEnd(record *newRecord);
void moveCurrentToEnd();
void display();
void update();
void deleteRecord();
void deleteAll();
void deleteHead();
void deleteEnd(record *previous);
void deleteMiddle(record *previous);
int verifyDelete();
void deleteNode(record *previous);
void deleteList();
void searchByLastname();
void wiriteToFile();
void loadFromFile();
void help();
char pause;


//	主函数
int main()
{
	cout << "Welcome...\n";
	cout << "*************************************************************\n";
	cout << "\n\n\n          欢迎使用PhoneBook个人电话簿管理系统...     \n\n";
	cout << "               Press enter to continue!\n\n\n";
	cout << "\n*************************************************************";
	cin.get(pause);
	system("cls");			//执行系统命令：cls-清屏
	int choice;
	head = NULL;
	loadFromFile();

	do
	{	//主菜单显示
		cout << "Menu...\n";
		cout << "***********************************************************\n";
		cout << "            PhoneBook个人电话管理系统主菜单              \n\n";
		cout << "	请选择以下功能:                          \n";
		cout << "	 1 - 添加一条记录\n";
		cout << "	 2 - 显示全部记录\n";
		cout << "	 3 - 按姓氏查找\n";
		cout << "	 4 - 更新记录\n";
		cout << "	 5 - 删除一条记录\n";
		cout << "	 6 - 清空电话簿\n";
		cout <<	"	 7 - 帮助\n";
		cout << "	 8 - 退出系统\n";
		cout << "***********************************************************\n";
		cout << "选择: ";
		cin >> choice;
		handleChoice(choice);
	}
	while(choice != 8);

	return 0;
}


//	根据用户选择(choice)调用对应处函数
void handleChoice(int choice)
{
	switch(choice)
	{
	case 1:						//添加一条记录
		addRecord();
		break;
	case 2:						//显示全部记录
		display();
		break;
	case 3:						//按姓氏查找
		searchByLastname();
		break;
	case 4:						//更新记录
		update();
		break;
	case 5:						//删除一条记录
		deleteRecord();
		break;
	case 6:						//清空电话簿
		deleteAll();
		break;
	case 7:						//帮助
		help();
		break;
	case 8:						//文件存盘,然后退出系统
		wiriteToFile();
		if(head != NULL)
		{
			deleteList(); 
		}
		break;
	default :					//其它输入则出错
		cout <<"输入有误!!请您重新输入选项!!\n";
		break;
	}
}


//	在链表中增加一个记录
void addRecord()
{
	record *newRecord;
	newRecord = new record;
	if(newRecord != NULL)
	{
		system("cls");
		cout << "Add a new record...\n";
		cout << "*************************************************************\n";
		cout << "请您输入...\n";
		cin.ignore(20,'\n');
		cout << "  姓氏: ";
		cin.get(newRecord->lastName,20);
		cin.ignore(20,'\n');
		cout << "  名字: ";
		cin.get(newRecord->firstName,15);
		cin.ignore(20,'\n');
		cout << "  电话号码: ";
		cin.get(newRecord->phoneNum,15);
		cin.ignore(20,'\n');
		cout << "  手机号码:";
		cin.get(newRecord->mobile,15);
		cin.ignore(20,'\n');
		insertNode(newRecord);
	}
	else
	{
		cout << "警告: 存储器错误, 新记录添加失败!!\n";
	}
	system("cls");
}


//	将一个由newRecord 指向的新节点插入链表中
void insertNode(record *newRecord)
{
	system("cls");
	record *before;
	record *after;
	if(head == NULL)		//链表为空,直接插入到头结点
	{
		newRecord->next = NULL;
		head = newRecord;
	}
	else
	{
		if(strcmp(newRecord->lastName, head->lastName) < 0)
		{
			makeNodeNewHead(newRecord);
		}
		else
		{
			current = posInsertPoint(newRecord->lastName);
			before = current;
			after = current->next;
			if(after == NULL)
			{
				addNodeToEnd(newRecord);
			}
			else
			{
				before->next = newRecord;
				newRecord->next = after;
			}
		}
	}
}


//	按姓氏，返回其在链表中的正确位置。新节点即将插入此点。
record *posInsertPoint(char lastname[20])
{
	char tempName[20];
	record *temp;
	int tempint;
	if(head->next != NULL)
	{
		current = head;
		temp = current->next;
		strcpy(tempName, temp->lastName);
		tempint = strcmp(lastname,tempName);
		while((tempint > 0) && (current->next !=NULL))
		{
			current = temp;
			if(current->next != NULL)
			{
				temp = current->next;
				strcpy(tempName, temp->lastName);
				tempint = strcmp(lastname,tempName);
			}
		}
	}
	else
	{
		current = head;
	}
	return(current);
}


//	添加到链表头部
void makeNodeNewHead(record *newRecord)
{
	record *temp;
	temp = head;
	newRecord->next = temp;
	head = newRecord;
}


//	添加到链表末尾
void addNodeToEnd(record *newRecord)
{
	newRecord->next = NULL;
	moveCurrentToEnd();
	current->next = newRecord;
}


//	current指针移动到链表尾
void moveCurrentToEnd()
{
	current = head;
	while(current->next != NULL)
	{
		current = current->next;
	}
}


//	显示全部记录
void display()
{
	char fullname[36];

	current = head;
	if(current != NULL)
	{
		cout << endl;
		cout << "       姓 名                         电话号码        手机号码\n";
		cout << "------------------------------    --------------   ---------------\n";
		do
		{
			strcpy(fullname,"");
			strcat(fullname, current->lastName);
			strcat(fullname, ", ");
			strcat(fullname, current->firstName);
			cout.setf(ios::left);
			cout << setw(36) << fullname;
			cout.unsetf(ios::left);
			cout.setf(ios::right);
			cout << setw(12) << current->phoneNum;
			cout.unsetf(ios::left);
			cout.setf(ios::right);
			cout << setw(15) << current->mobile << endl;
			current = current->next;
			cout <<  endl;
		}
		while(current != NULL);
		cout << "Press Enter to continue \n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
	}
	else
	{
		cout << "\n记录为空!!\n";
		cout << "Press Enter to continue \n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
	}
}


//	按姓氏查找记录
void searchByLastname()
{
	system("cls");
	char searchStr[20];
	current = head;
	cin.ignore(20,'\n');
	cout << "Search...\n";
	cout << "*******************************************************************\n";
	cout << "请输入姓氏: ";
	cin.get(searchStr,20);
	cin.ignore(20,'\n');
	while((current != NULL) && (strcmp(current->lastName, searchStr) != 0))
	{
		current = current->next;
		if(current != NULL)
		{
		cout << "匹配的记录:\n";
		cout << current->firstName << ' ' << current->lastName << endl;
		cout << current->phoneNum << ' ' << current->mobile << endl;
		cout << "Press Enter to Contiune\n";
		cin.get(pause);
		system("cls");
		}
		else
		{
		cout << "没有匹配记录!!\n";
		cout << "Press Enter to Contiune\n";
		cin.get(pause);
		system("cls");
		}
	}
}


//	更新记录
void update()
{
	system("cls");
	char searchStr[20];
	current = head;
	cin.ignore(20,'\n');
	cout << "Update...\n";
	cout << "********************************************************************\n";
	cout << "请输入需要更新记录的姓氏:";
	cin.get(searchStr,20);
	cin.ignore(20,'\n');
	while((current != NULL) && (strcmp(current->lastName, searchStr) != 0))
	{
		current = current->next;
	}
	if(current != NULL)
	{
		cout << "匹配的记录:\n";
		cout << current->lastName << ' ' << current->firstName << ' ';
		cout << current->phoneNum << ' ' << current->mobile << endl;
		cout << "请您输入新的记录信息...\n";
		cout << "姓氏: ";
		cin.get(current->lastName,20);
		cin.ignore(20,'\n');
		cout << "名字: ";
		cin.get(current->firstName,15);
		cin.ignore(20,'\n');
		cout << "电话号码: ";
		cin.get(current->phoneNum,15);
		cin.ignore(20,'\n');
		cout << "手机号码:";
		cin.get(current->mobile,15);
		cin.ignore(20,'\n');

		cout << "更新成功!!\n";
		cout << "Press Enter to Contiune\n";
		cin.get(pause);
		system("cls");
	}
	else
	{
		cout << "没有指定要更新的记录!!\n";
		cout << "Press Enter to Contiune\n";
		cin.get(pause);
		system("cls");
	}
}


//	删除一条记录
void deleteRecord()
{
	system("cls");
	char searchStr[20];
	record *previous;
	previous = NULL;
	current = head;
	cin.ignore(20,'\n');
	cout << "请输入需要删除的记录的姓氏: ";
	cin.get(searchStr,20);
	cin.ignore(20,'\n');
	while((current != NULL) && (strcmp(current->lastName, searchStr) != 0))
	{
		previous = current;
		current = current->next;
	}
	if(current != NULL)
	{
		cout << "\n匹配记录\n";
		cout << current->firstName << ' ' << current->lastName << endl;
		cout << current->phoneNum << ' ' << current->mobile << endl;
		if(verifyDelete())
		{
			deleteNode(previous);
			cout << "\n记录删除成功!!\n";
		}
		else
		{
			cout << "\n记录删除失败!!\n";
		}
	}
	else
	{
		cout << "\n没有匹配记录,删除失败!!\n";
	}
	system("cls");
}


//	清空电话簿
void deleteAll()
{
	if(verifyDelete())
	{
		deleteList();
		cout << "\n记录删除成功!!\n";
	}
	else
	{
		cout << "\n记录删除失败!!\n";
	}
	system("cls");
}


//	帮助
void help()
{
help:
	int question;
	system("cls");
	cout << "Help...\n";
	cout << "**************************************************************\n";
	cout << "	请选择帮助的主题:\n";
	cout << "	 1: 我的记录怎么了?\n";
	cout << "	 2: 我怎么样清除所有记录?\n";
	cout << "	 3: 怎么进行操作?\n";
	cout << "	 4: 怎么联系我?\n";
	cout << "	 5: 退出\n";
	cout << "**************************************************************\n";
	cout << "选择: ";
	cin >>  question;
	switch(question)
	{
	case 1:
		cout << "\n建议:\n";
		cout << "  检查电话簿文件路径是否正确,\n";
		cout << "  检查文件名是否正确.\n";
		cout << "Press Enter to continue \n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
		goto help;
		break;
	case 2:
		cout << "\n建议:\n";
		cout << "  返回主菜单,选择清空电话簿,或者直接删除文件PhoneBook.dat.\n";
		cout << "Press Enter to contiune\n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
		goto help;
		break;
	case 3:
		cout << "\n建议:\n";
		cout << "  直接选择主菜单各个功能号就OK.\n";
		cout << "Press Enter to contiune\n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
		goto help;
		break;
	case 4:
		cout << "\n回答:\n";
		cout << "  我的电话:[phone]\n";
		cout << "  我的地址:东大浦口校区090021信箱\n";
		cout << "  我的E-mail: \n";
		cout << "    [e-mail]\n";
		cout << "    [e-mail]\n";
		cout << "Press Enter to contiune\n";
		cin.get(pause);
		cin.ignore(1,pause);
		system("cls");
		goto help;
		break;
	default:
		cout << "Press Enter To exit";
		cout << "Press Enter to contiune\n";
		break;
	}
}


//	用户操作确认
int verifyDelete()
{
	char YesNo;
	cout << "\nAre you sure (Y/N) ";
	cin >> YesNo;
	if((YesNo == 'Y') || (YesNo == 'y'))
	{
		return(1);
	}
	else
	{
		return(0);
	}
}


//	删除结点
void deleteNode(record *previous)
{
	if(current == head)
	{
		deleteHead();
	}
	else
	{
		if(current->next == NULL)
		{
			deleteEnd(previous);
		}
		else
		{
			deleteMiddle(previous);
		}
	}
}


//	删除头结点
void deleteHead()
{
	current = head;
	if(head->next != NULL)
	{
		head = current->next;
	}
	else
	{
		head = NULL;
	}
	delete current;
}


//	删除尾结点
void deleteEnd(record *previous)
{
	delete current;
	previous->next = NULL;
	current = head;
}


//	删除链表中间结点
void deleteMiddle(record *previous)
{
	previous->next = current->next;
	delete current;
	current = head;
}


//	删除链表
void deleteList()
{
	record *temp;
	current = head;
	do
	{
		temp = current->next;
		delete current;
		current = temp;
	}
	while(temp != NULL);
	head = NULL;
}


//	把链表信息写入文件存盘
void wiriteToFile()
{
	ofstream outfile;
	outfile.open("PhoneBook.dat",ios::out);
	if (outfile)
	{
		current = head;
		if(head != NULL)
		{
			do
			{
				outfile << current->lastName << endl;
				outfile << current->firstName << endl;
				outfile << current->phoneNum << endl;
				outfile << current->mobile << endl;
				current = current->next;
			}
			while(current != NULL);
		}
		outfile << "End" << endl;
		outfile.close();
	}
	else
	{
		cout << "打开文件错误!!\n";
	}
}


//	从数据文件PhoneBook.dat中读取数据重建链表处理函数
void loadFromFile()
{
	record *newRecord;
	ifstream infile;
	int loop = 0;
	infile.open("PhoneBook.dat",ios::in);
	if (infile)
	{
		do
		{
			newRecord = new record;
			if(newRecord != NULL)
			{
				infile.get(newRecord->lastName,20);
				infile.ignore(20,'\n');
				if((strcmp(newRecord->lastName, "") != 0) && (strcmp(newRecord->lastName, "End") != 0))
				{
					infile.get(newRecord->firstName, 15);
					infile.ignore(20,'\n');
					infile.get(newRecord->phoneNum, 15);
					infile.ignore(20,'\n');
					infile.get(newRecord->mobile, 15);
					insertNode(newRecord);
				}
				else
				{
					delete newRecord;
					loop = 1;
				}
			}
			else
			{
				cout << "警告: 存储器错误, 从磁盘加载文件失败!!\n";
				loop = 1;
			}
		}
		while(loop == 0);
		infile.close();
	}
	else
	{
		cout << "电话簿为空!!\n";
	}
}