c++作业之同学通讯录

题目要求：

以本班同学的具体数据为背景，设计一个本班同学通讯录

实现以下功能：

0) 用户登录(分为班长和普通同学两种账号，分别有不同权限)

1) 通讯录编辑（添加、删除）；

2) 按不同的项进行查找；

3) 对已存在的通讯录按不同的项排序；

4）对已存入信息可以进行更新（如更换地址或手机号等等）

5) 将通讯录写入文件；

6) 从文件读入通讯录。

7）班长拥有所有功能权限，

普通同学可以查看所有信息，但只能更改自己的信息。

班长可以查看所有信息，也可以更改其他同学的信息。

备注：通讯录至少应该有以下数据项：学号，姓名，地址，电话，邮编，E-mail。

请尽量做到界面美观，用户友好。

程序说明：

通讯录.txt : 通讯录存储，默认为空

num.txt：存储联系人个数，默认为0，需手动添加

编译器：vs2017

注意：学号不能相同，不实现排序功能

程序函数说明：

struct Student；//联系人结构体main()；//主函数void View();//输出通讯录void Find();//查找void Change();//更改，包括添加，修改void Add();//添加void Replace();//修改void ChangeS();//普通用户修改void Convert();//界面效果

提升空间：

数据输入数组时，频繁使用同一语句

输出时一样

源代码：


#include<iostream>
#include<string>
#include<fstream>
#include<cstdio>
#include<Windows.h>struct Student//结构体
{std::string name;std::string number;std::string address;std::string phonenumber;std::string mail;std::string postcode;
};int main()
{void View();//输出void Find();//查找void Change();//更改，包括添加，修改void Add();//添加void Replace();//修改void ChangeS();//普通用户修改void Convert();void Delete();std::cout << "**欢迎使用**同学通讯录**" << std::endl;std::cout << "**请输入您的身份：\n  1.班长\n  2.普通学生" << std::endl;std::string identify;//身份while (std::cin >> identify){if (!(identify == "1" || identify == "2")){std::cout << "**对不起，您的输入有误！请重新输入：\n";}else{break;}}std::cout << "\n正在登录....";Convert();std::cout << "\n";if (identify == "1")//班长{char temp = 'y';while (temp == 'y'){system("cls");std::cout << "**您拥有以下权限：**" << std::endl;std::cout << "  1.查看通讯录；\n  2.进行查找；\n  3.更改信息；\n  4.退出程序；\n--------------------\n";std::cout << "**请选择您想进行的操作，输入序号：";std::string strNum;int num;while (std::cin >> strNum){if (!(strNum == "1" || strNum == "2" || strNum == "3" || strNum == "4")){std::cout << "**对不起，您的输入有误！请重新输入：\n";}else{break;}}num = std::stoi(strNum);//格式转换switch (num){case 1:View(); break;case 2:Find(); break;case 3:Change(); break;case 4:temp = 'n'; break;}}}if (identify == "2")//普通学生{char temp = 'y';while (temp == 'y'){system("cls");std::cout << "**您拥有以下权限：**" << std::endl;std::cout << "  1.查看通讯录；\n  2.进行查找；\n  3.更改自己的信息；\n  4.退出程序；\n------------------\n";std::cout << "**请选择您想进行的操作，输入序号：";std::string strNum;int num;while (std::cin >> strNum){if (!(strNum == "1" || strNum == "2" || strNum == "3" || strNum == "4")){std::cout << "**对不起，您的输入有误！请重新输入：\n";}else{break;}}num = std::stoi(strNum);switch (num){case 1:View(); break;case 2:Find(); break;case 3:ChangeS(); break;case 4:temp = 'n'; break;}}}std::cout << "\n正在退出....";Convert();system("pause");return 0;
}void View()//查看
{void Convert();std::ifstream myFile;myFile.open("通讯录.txt", std::ios::binary);std::cout << "\n正在输出数据....";Convert();int ch;ch = myFile.peek();if (ch == EOF){std::cout << "\n**非常抱歉！通讯录里面空空荡荡！**\n" << std::endl;}std::ifstream save("num.txt");std::string x;getline(save, x);int y = std::stoi(x);std::string str;Student s2[100];int tempnum = 1;int i = 0;while (getline(myFile, str)){if (tempnum == 1){s2[i].name = str;tempnum++;std::cout << s2[i].name;continue;}if (tempnum == 2){s2[i].number = str;tempnum++;continue;}if (tempnum == 3){s2[i].phonenumber = str;tempnum++;continue;}if (tempnum == 4){s2[i].mail = str;tempnum++;continue;}if (tempnum == 5){s2[i].address = str;tempnum++;continue;}if (tempnum == 6){s2[i].postcode = str;tempnum = 1;i++;continue;}}for (int k = 0; k < y; k++){std::cout << "第" << k + 1 << "位联系人：\n";std::cout << " 姓名：" << s2[k].name << "\n 学号：" << s2[k].number << "\n 电话号码：" << s2[k].phonenumber << "\n 邮箱：" << s2[k].mail << "\n 地址：" << s2[k].address << "\n 邮编：" << s2[k].postcode << "\n\n";}save.close();myFile.close();system("pause");
}void Change()//更改
{void Add();void Replace();void Delete();while (1){system("cls");std::cout << "**现在您可以进行以下操作：\n 1.添加联系人；\n 2.修改联系人；\n 3.删除联系人；\n 4.返回主菜单" << std::endl;std::string choice;while (std::cin >> choice){if (!(choice == "1" || choice == "2" || choice == "3" || choice == "4")){std::cout << "**对不起，您的输入有误！请重新输入：\n";}else{break;}}std::string temp;temp = "1";if (choice == "1"){while (temp == "1"){Add();std::cout << "**您是否想继续添加？**\n 1.是\n 2.否\n";while (std::cin >> temp){if (!(temp == "1" || temp == "2")){std::cout << "**对不起，您的输入有误！请重新输入：**\n";}else{break;}}if (temp == "2"){break;}}}if (choice == "2"){Replace();}if (choice == "3"){Delete();}if (choice == "4"){break;}}
}void Add()//添加
{void Convert();std::ofstream myFile("通讯录.txt", std::ios::app);std::ifstream save("num.txt", std::ios::app);std::string x;getline(save, x);int y = std::stoi(x);y++;save.close();Student student;std::cout << "**请输入姓名：\n";std::cin >> student.name;std::cout << "**请输入学号：\n";std::cin >> student.number;std::cout << "**请输入地址：\n";std::cin >> student.address;std::cout << "**请输入电话号码：\n";std::cin >> student.phonenumber;std::cout << "**请输入邮箱：\n";std::cin >> student.mail;std::cout << "**请输入邮编：\n";std::cin >> student.postcode;myFile << student.name << "\n" << student.number << "\n" << student.phonenumber << "\n" << student.mail << "\n" << student.address << "\n" << student.postcode << "\n";std::cout << "\n正在保存....";Convert();std::cout << "**保存成功！**\n" << std::endl;std::ofstream save1("num.txt", std::ios::trunc);save1 << y;myFile.close();save.close();
}
void Replace()//修改
{void Convert();std::ifstream myFile("通讯录.txt");std::ifstream save("num.txt");std::string x;getline(save, x);int y = std::stoi(x);std::string str;Student s2[100];int tempnum = 1;int i = 0;while (getline(myFile, str)){if (tempnum == 1){s2[i].name = str;tempnum++;continue;}if (tempnum == 2){s2[i].number = str;tempnum++;continue;}if (tempnum == 3){s2[i].phonenumber = str;tempnum++;continue;}if (tempnum == 4){s2[i].mail = str;tempnum++;continue;}if (tempnum == 5){s2[i].address = str;tempnum++;continue;}if (tempnum == 6){s2[i].postcode = str;tempnum = 1;i++;continue;}}int num = 0;std::string str2;while (num == 0){std::cout << "**输入您想修改的学生学号：";std::cin >> str2;for (int j = 0; j < y; j++){if (str2 == s2[j].number){std::cout << " 1.姓名：" << s2[j].name << "\n 2.学号：" << s2[j].number << "\n 3.电话号码：" << s2[j].phonenumber << "\n 4.邮箱：" << s2[j].mail << "\n 5.地址：" << s2[j].address << "\n 6.邮编：" << s2[j].postcode << "\n";num++;}if (j == y - 1 && num == 0){std::cout << "**Not Found!**\n" << std::endl;}}}std::cout << "**输入您想修改的信息的序号：";std::string str3;std::string strNum;int temp;while (std::cin >> strNum){if (!(strNum == "1" || strNum == "2" || strNum == "3" || strNum == "4" || strNum == "5" || strNum == "6")){std::cout << "**对不起，您的输入有误！请重新输入：\n";}else{break;}}temp = std::stoi(strNum);std::cout << "**输入修改后的信息：";std::string str4;std::cin >> str4;int flag = 0;for (int j = 0; j < y; j++){if (str2 == s2[j].number){switch (temp){case 1:s2[j].name = str4; break;case 2:s2[j].number = str4; break;case 3:s2[j].phonenumber = str4; break;case 4:s2[j].mail = str4; break;case 5:s2[j].address = str4; break;case 6:s2[j].postcode = str4; break;}flag++;}if (j == y - 1 && flag == 0){std::cout << "**Not Found!**\n" << std::endl;}}myFile.close();std::ofstream myFile2("通讯录.txt", std::ios::trunc);for (int k = 0; k < y; k++){myFile2 << s2[k].name << "\n" << s2[k].number << "\n" << s2[k].phonenumber << "\n" << s2[k].mail << "\n" << s2[k].address << "\n" << s2[k].postcode << "\n";}std::cout << "正在修改....";Convert();std::cout << "**修改成功！**\n" << std::endl;myFile2.close();save.close();system("pause");
}
void Find()//查找
{void Convert();std::ifstream myFile("通讯录.txt");std::ifstream save("num.txt");std::string x;getline(save, x);int y = std::stoi(x);if (y == 0){std::cout << "\n**非常抱歉！通讯录里面空空荡荡！**\n" << std::endl;}else{std::string str;Student s2[100];int tempnum = 1;int i = 0;while (getline(myFile, str)){if (tempnum == 1){s2[i].name = str;tempnum++;continue;}if (tempnum == 2){s2[i].number = str;tempnum++;continue;}if (tempnum == 3){s2[i].phonenumber = str;tempnum++;continue;}if (tempnum == 4){s2[i].mail = str;tempnum++;continue;}if (tempnum == 5){s2[i].address = str;tempnum++;continue;}if (tempnum == 6){s2[i].postcode = str;tempnum = 1;i++;continue;}}std::cout << "**输入你要查找的某一项具体的信息：";std::string str1;std::cin >> str1;int num = 0;for (int j = 0; j < y; j++){if (str1 == s2[j].name || str1 == s2[j].number || str1 == s2[j].phonenumber || str1 == s2[j].mail || str1 == s2[j].address || str1 == s2[j].postcode){std::cout << "\n正在查找....";Convert();std::cout << " 姓名：" << s2[j].name << "\n 学号：" << s2[j].number << "\n 电话号码：" << s2[j].phonenumber << "\n 邮箱：" << s2[j].mail << "\n 地址：" << s2[j].address << "\n 邮编：" << s2[j].postcode << "\n";num++;std::cout << "**查找成功！**\n" << std::endl;}if (j == y - 1 && num == 0){std::cout << "**Not Found!**\n" << std::endl;}}}myFile.close();system("pause");
}
void ChangeS()//普通用户修改
{void Convert();std::ifstream myFile("通讯录.txt");std::ifstream save("num.txt");std::string x;getline(save, x);int y = std::stoi(x);if (y == 0){std::cout << "\n**非常抱歉！通讯录里面空空荡荡！**\n" << std::endl;}else{std::string str;Student s2[100];int tempnum = 1;int i = 0;while (getline(myFile, str)){if (tempnum == 1){s2[i].name = str;tempnum++;continue;}if (tempnum == 2){s2[i].number = str;tempnum++;continue;}if (tempnum == 3){s2[i].phonenumber = str;tempnum++;continue;}if (tempnum == 4){s2[i].mail = str;tempnum++;continue;}if (tempnum == 5){s2[i].address = str;tempnum++;continue;}if (tempnum == 6){s2[i].postcode = str;tempnum = 1;i++;continue;}}std::cout << "**输入你的学号：";std::string str1;std::cin >> str1;int num = 0;for (int j = 0; j < y; j++){if (str1 == s2[j].number){std::cout << " 姓名：" << s2[j].name << "\n 学号：" << s2[j].number << "\n 电话号码：" << s2[j].phonenumber << "\n 邮箱：" << s2[j].mail << "\n 地址：" << s2[j].address << "\n 邮编：" << s2[j].postcode << "\n";std::cout << "**输入您想修改的信息：";std::string str2;std::cin >> str2;std::cout << "**输入修改后的信息：";std::string str3;std::cin >> str3;if (str2 == s2[j].name)       s2[j].name = str3;if (str2 == s2[j].number)     s2[j].number = str3;if (str2 == s2[j].phonenumber)s2[j].phonenumber = str3;if (str2 == s2[j].mail)       s2[j].mail = str3;if (str2 == s2[j].address)    s2[j].address = str3;if (str2 == s2[j].postcode)   s2[j].postcode = str3;num++;}if (j == y - 1 && num == 0){std::cout << "**Not Found!**\n" << std::endl;}}myFile.close();if (num != 0){std::ofstream myFile2("通讯录.txt", std::ios::trunc);for (int k = 0; k < y; k++){myFile2 << s2[k].name << "\n" << s2[k].number << "\n" << s2[k].phonenumber << "\n" << s2[k].mail << "\n" << s2[k].address << "\n" << s2[k].postcode << "\n";}std::cout << "\n正在修改....";Convert();std::cout << "**修改完成！**" << std::endl;myFile2.close();}}save.close();system("pause");
}
void Convert()
{for (int i = 0; i < 100; i++){std::cout.width(3);std::cout << i << "%";Sleep(1);std::cout << "\b\b\b\b";}std::cout << "\n";
}
void Delete()
{void Convert();std::ifstream myFile("通讯录.txt");std::ifstream save("num.txt");std::string x;getline(save, x);int y = std::stoi(x);std::string str;Student s2[100];int tempnum = 1;int i = 0;while (getline(myFile, str)){if (tempnum == 1){s2[i].name = str;tempnum++;continue;}if (tempnum == 2){s2[i].number = str;tempnum++;continue;}if (tempnum == 3){s2[i].phonenumber = str;tempnum++;continue;}if (tempnum == 4){s2[i].mail = str;tempnum++;continue;}if (tempnum == 5){s2[i].address = str;tempnum++;continue;}if (tempnum == 6){s2[i].postcode = str;tempnum = 1;i++;continue;}}std::cout << "输入您想删除的学生学号：";std::string str2;std::cin >> str2;int num = 0;int temp;for (int j = 0; j < y; j++){if (str2 == s2[j].number){std::cout << "\n正在查找....";Convert();std::cout << "\n";std::cout << " 姓名：" << s2[j].name << "\n 学号：" << s2[j].number << "\n 电话号码：" << s2[j].phonenumber << "\n 邮箱：" << s2[j].mail << "\n 地址：" << s2[j].address << "\n 邮编：" << s2[j].postcode << "\n";num++;temp = j;}if (j == y - 1 && num == 0){std::cout << "**Not Found!**\n" << std::endl;}}myFile.close();save.close();std::ofstream myFile2("通讯录.txt", std::ios::trunc);for (int k = 0; k < temp; k++){myFile2 << s2[k].name << "\n" << s2[k].number << "\n" << s2[k].phonenumber << "\n" << s2[k].mail << "\n" << s2[k].address << "\n" << s2[k].postcode << "\n";}for (int k = temp + 1; k < y - 1; k++){myFile2 << s2[k].name << "\n" << s2[k].number << "\n" << s2[k].phonenumber << "\n" << s2[k].mail << "\n" << s2[k].address << "\n" << s2[k].postcode << "\n";}std::ofstream save1("num.txt", std::ios::trunc);y--;save1 << y;std::cout << "\n正在删除....";Convert();std::cout << "\n**删除成功！**" << std::endl;myFile.close();save.close();system("pause");
}

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