链表实现通讯录管理系统-C++

用数据结构里面线性结构的链表实现

文件操作未写

有登录操作，复制源码需要更改登录模块的密码文件存放位置

使用VS2017编译器需要保留开头：#define _CRT_SECURE_NO_WARNINGS

#define _CRT_SECURE_NO_WARNINGS
#include "iostream"
#include "cstdio"
#include "fstream"
#include "stdlib.h"
#include "String"
#include "iomanip"
#include "windows.h"
#define LEN 100
using namespace std;


using std::cin;
using std::cout;
using std::endl;
using std::ifstream;
using std::ofstream;
using std::ios;
using std::cerr;
using std::string;
using std::setw;

typedef struct LNode {
	char num[10];
	char name[20];
	char telNum[12];
	char qq[10];
	struct LNode *next;
}LNode,*LinkList;

int n = 0;

void InitList(LinkList &L);//初始化表
void InsertLNode(LinkList &L,LNode *s);//前插法插入新结点
LinkList SearchName(LinkList L);//按姓名查找
LinkList SearchNum(LinkList L);//按学号查找
void DelLNode(LinkList &L,LinkList p);//删除p结点
void PrintLNode(LinkList p);//打印结点
void PrintList(LinkList L);//打印表
/*----------------系统函数----------------*/
void CreateLinkList(LinkList &L);//创建链表
void DelName(LinkList &L);//按姓名删除通讯录成员
void DelNum(LinkList &L);//按学号删除通讯录成员
void saveRecord(LinkList L);//存储信息
void loadRecord(LinkList &L);//加载信息
/*--------------------------------------*/
void Secret();
void fun();
void ver();
void yanshi(char *p);
void clear();
void header();

void menu() {
	LinkList L=NULL;
	int select;
	do {
		system("cls");
		printf("\t\t\t     Welcome to the address book information management system!\n\n\n");
		printf("\t\t\t\t***************************************************\n");
		printf("\t\t\t\t *    │1.InitList         2.Add Message   │    *\n");
		printf("\t\t\t\t *    │                                   │    *\n");
		printf("\t\t\t\t *    │3.Search Message   4.Save File     │    *\n");
		printf("\t\t\t\t *    │                                   │    *\n");
		printf("\t\t\t\t *    │5.Sort Static      6.Load Message  │    *\n");
		printf("\t\t\t\t *    │                                   │    *\n");
		printf("\t\t\t\t *    │7.Display Message  8.Delete Message│    *\n");
		printf("\t\t\t\t *    │                                   │    *\n");
		printf("\t\t\t\t *    │9.Save Message     0.Exit System   │    *\n");
		printf("\t\t\t\t***************************************************\n");
		cout << endl;
		yanshi((char *)"\t\tPlease choose the mode of operation(1~8):\n");
/*		cout << "\t\tPlease choose the mode of operation(1~8):" << endl;*/
		cin >> select;
		switch (select) {
		case 8:
			cout << "Please select the deletion method：\n1.Delete by student number 2.Delete by name\n" << endl;
			int x;
			cin >> x;
			switch (x) {
			case 1:
				DelNum(L);
				break;
			case 2:
				DelName(L);
				break;
			}
		case 6:
			loadRecord(L);
			break;
		case 5:
			break;
		case 4:
			saveRecord(L);
			break;
		case 3:
			clear();
			cout << "Please select a search method：\n1.Find by student number 2.Find by name\n" << endl;
			int a;
			cin >> a;
			switch (a) {
			case 1:
				clear();
				{
					LinkList aa = SearchNum(L);
					header();
					PrintLNode(aa);
					cout << "\n\n\n成功!" << endl;
					system("pause");
					menu();
				}
				break;
			case 2:
				clear();
				{
					LinkList b = SearchName(L);
					header();
					PrintLNode(b);
					cout << "\n\n\n成功!" << endl;
					system("pause");
					menu();
					break;
				}
			}
			break;
		case 1:
			InitList(L);
			break;
		case 9:
			break;
		case 7:
			PrintList(L);
			break;
		case 2:
			CreateLinkList(L);
			break;
		case 0:
			cout << endl << endl << endl;
			cout << "The programe is over!" << endl << endl << endl;
			Sleep(2000);
			exit(0);
			break;
		}
	} while (select != 8);
}

int main() {
	fun();
	ver();//版本信息
	Secret();//密码登录
	menu();
	return 0;
}

//初始化表
void InitList(LinkList & L)
{
	L = new LNode;//申请头结点
	L->next= NULL;
}

//插入一条信息
void InsertLNode(LinkList & L, LNode *s)
{
	s->next = L->next;
	L->next = s;
}

//按姓名查找
LinkList SearchName(LinkList L)
{
	char name[20];
	cout << "请输入要查找的姓名：" << endl;
	cin >> name;
	LinkList p = L->next;
	while (p) {
		//如果找到，退出循环,返回p
		if (strcmp(p->name, name) == 0)
			break;
		else
			p = p->next;
	}
	return p;
}

//按学号查找
LinkList SearchNum(LinkList L)
{
	char num[10];
	cout << "请输入要查找的学号：" << endl;
	cin >> num;
	LinkList p = L->next;
	while (p) {
		//如果找到，退出循环,返回p
		if (strcmp(p->num, num) == 0)
			break;
		else
			p = p->next;
	}
	return p;
}

//删除节点
void DelLNode(LinkList &L,LinkList p)
{
	LinkList s=NULL, q;
	q = L->next;
	//将s指向p前面的一个结点
	while (q&&q!=p) {
		s = q;
		q = q->next;
	}
	s->next = q->next;
	delete q;
}

//打印一条信息
void PrintLNode(LinkList p)
{
	printf("%15s", p->num);
	printf("%15s", p->name);
	printf("%15s", p->telNum);
	printf("%15s\n",p->qq);
}

//打印通讯录
void PrintList(LinkList L)
{
	clear();
	header();
	LinkList p = L->next;
	while (p) {
		PrintLNode(p);
		p = p->next;
	}
	system("pause");
}

//添加信息
void CreateLinkList(LinkList & L)
{
	char ans = 'y';
	n = 0;
	while (ans=='y'||ans=='Y') {
		system("cls");
		LNode *p = new LNode;
		cout << "请输入学号：" << endl;
		cin >> p->num;
		cout << "请输入姓名：" << endl;
		cin >> p->name;
		cout << "请输入电话号码：" << endl;
		cin >> p->telNum;
		cout << "请输入QQ号：" << endl;
		cin >> p->qq;
		InsertLNode(L,p);
		n++;
		cout<<"是否继续？(Y/N)"<> name;
	p = SearchName(L);
	if (p) {
		DelLNode(L,p);
	}
	system("pause");
}

//按学号删除
void DelNum(LinkList & L)
{
	char num[20];
	LinkList p;
	cout << "请输入要删除的学生学号：" << endl;
	cin >> num;
	p = SearchName(L);
	if (p) {
		DelLNode(L, p);
	}
	system("pause");
}

//存储信息
void saveRecord(LinkList L)
{
	FILE *fp=NULL;
	int count = 0;
	if ((fp=(fopen("student.dat","wb")))==NULL) {
		cout << "Can't open this file!" << endl;
		Sleep(3000);
	}
	LinkList q = L->next;
	while (q) {
		fwrite(q, sizeof(LNode), 1, fp);
		count ++;
		q = q->next;
	}
	fclose(fp);
		cout << "Save the file successfully!" << endl;
		getchar();
}

//加载信息
void loadRecord(LinkList & L)
{
	FILE *fp=NULL;
	int count = 0;
	if ((fp=(fopen("student.dat", "rb"))) == NULL) {
		cout << "Can't open this file!" << endl;
		Sleep(3000);
	}
	LinkList p=NULL;
	while(1){
		p = new LNode;
		if (fread(p, sizeof(LNode), 1, fp) > 0) {
			InsertLNode(L,p);
			count++;
		}
		else {
			break;
		}
	}
	fclose(fp);
	cout << endl << endl << "Load "<UsrName);
	strcpy_s(psword, usr->Psword);
	string temp;
	int flag = 0;
	int i = 0;
	ifstream fin("E:\\Love-Study\\学生通讯录管理系统\\static.dat", ios::in);//在这个路径下读入文件
	ofstream fout("E:\\Love-Study\\学生通讯录管理系统\\static.dat", ios::app);//在同一个路径下，如果注册成功则写入文件
	while (std::getline(fin, temp))//每次读一行的数据进入temp中。
	{
		i++;
		if (i % 2 == 0) continue;//访问的是密码这一行，跳出。
		if (!strcmp(usrname, temp.c_str())) flag = 1;//flag=1说明用户名已经被注册了
	}
	fin.close();
	if (flag) {
		return 0;//之前有重复的账户名
	}
	else {//没注册
		fout << usrname << endl;//向文件写入注册者的用户名，然后换一行
		fout << psword << endl;//写入密码，换行
		fout.close();
		return 1;//注册成功
	}
}
int login(struct UsrInfo* usr) {
	char usrname[20];
	char psword[20];
	strcpy_s(usrname, usr->UsrName);
	strcpy_s(psword, usr->Psword);
	string temp1;
	string temp2;
	int existname = 0;
	int match = 0;
	int i = 0;
	ifstream fin("E:\\Love-Study\\学生通讯录管理系统\\static.dat", ios::in);
	while (std::getline(fin, temp1))
	{
		std::getline(fin, temp2);//一次读进去两行，分别是用户名和密码
		if (!strcmp(usrname, temp1.c_str())) {//有这个用户名了，接下来看看密码是不是相符的
			existname = 1;
			if (!strcmp(psword, temp2.c_str())) {//相符
				match = 1;
				break;
			}
		}
	}
	fin.close();
	if (!existname) {
		return 2;//没有账户名
	}
	else {
		if (match) return 1;
		else return 3;//用户名和密码不匹配
	}
}
void Secret()
{
	clear();
	cout << "1.注册  2.登录" << endl;
	int c;
	cin >> c;
	switch (c) {
	case 1:
	{
		clear();
		UsrInfo test1;//用于测试注册程序的。
		char urr[20], prr[20];
		cout << "请输入用户名：" << endl;
		cin >> urr;
		cout << "请输入密码：" << endl;
		cin >> prr;
		strcpy(test1.UsrName, urr);
		strcpy(test1.Psword, prr);
		switch (regest(&test1))
		{
		case 1:
			cout << "注册成功" << endl;
			system("pause");
			Secret();
			break;
		case 0:
			cout << "用户名已被注册，请重新选择用户名" << endl;
			system("pause");
			Secret();
			break;
		default:
			break;
		}
		break;
	}
	case 2:
	{
		clear();
		UsrInfo test2;//用于测试注册程序的。
		char ur[20], pr[20];
		cout << "请输入用户名：" << endl;
		cin >> ur;
		cout << "请输入密码：" << endl;
		cin >> pr;
		strcpy(test2.UsrName, ur);
		strcpy(test2.Psword, pr);
		switch (login(&test2))
		{
		case 1:
			cout << "登录成功" << endl;
			system("pause");
			menu();
			break;
		case 3:
			cout << "密码错误" << endl;
			system("pause");
			Secret();
			break;
		case 2:
			cout << "没有此用户名，请注册" << endl;
			system("pause");
			Secret();
			break;
		default:
			break;
		}
	}
	}
}