C++实现简单通讯录

#ifndef PERSON_H_
#define PERSON_H_
#include <string>
 
class Person
{
public:
 std::string name;
 std::string tel;
public:
 Person();
 ~Person();
 int operator==(const Person& p);//重载==运算符，本程序中并没有用到
private:
 
};
 
 
#endif // !PERSON_H_

#include "Person.h"
 
Person::Person()
{
}
 
Person::~Person()
{
}
 
int Person::operator==(const Person& p)
{
 if (this->name == p.name)
 {
 if (this->tel == p.tel)
  return 0;
 else
  return -1;
 }
 else
 return -2;
}

#ifndef LIST_H_
#define LIST_H_
#include <vector>
#include "Person.h"
class List
{
public:
 List();
 ~List();
 void Showfile();//显示通讯录
 int Readfile();//从磁盘读取文件
 void Add();
 void Reflush();//刷新数据，即重新写入磁盘
 void Del();
 void Search();
private:
 std::vector<Person> myfile;
};
 
inline void setout();//输出格式控制
#endif

#include "List.h"
#include <iostream>
#include <fstream>
#include <string>
 
List::List()
{
}
 
List::~List()
{
}
 
void setout()//输出格式控制，即左对齐
{
 std::cout.setf(std::ios_base::left, std::ios_base::adjustfield);
}
void List::Showfile()
{
 std::vector<Person>::iterator iter;
 setout();
 for (iter = this->myfile.begin(); iter != this->myfile.end(); iter++)
 {
 std::cout.width(15);//字域宽度为15
 std::cout << iter->name;
 std::cout.width(15);
 std::cout << iter->tel << "\n";
 }
}
 
int List::Readfile()
{
 std::fstream readfile("mylist.txt");
 int rows = 0;
 if (readfile)//如果文件存在
 {
 std::cout << "*******Telephone book********\n";
 std::cout << "name:" << "\t\t" << "phone:" << "\n";
 Person p;
 if (!(readfile >> p.name >> p.tel))//如果第一次读取为空
 {
  std::cout << "\tNULL\n";
  return 1;
 }
 myfile.push_back(p);
 rows++;
 while(readfile>>p.name>>p.tel)//读取后存入vector容器中
 {
  rows++;
  myfile.push_back(p);
 }
 
 this->Showfile();
 std::cout << "Total:\t" << rows << "\tinfos\n";
 readfile.close();
 return rows;
 }
 else
 {
 std::ofstream outfile;//磁盘中不存在文件的话则创建
 outfile.open("mylist.txt");
 if (!outfile.is_open())
 {
  std::cout << "file is not created!\n";
  return -1;
 }
 else
 {
  std::cout << "file not exist but we have created one for you!\n";
  std::cout << "*******Telephone book********\n";
  std::cout << "name:" << "\t\t" << "phone:" << "\n";
  std::cout << "\tNULL\n";
 }
 outfile.close();
 }
 return 2;
}
void List::Reflush()
{
 std::ofstream outfile("mylist.txt");
 std::vector<Person>::iterator iter;
 setout();
 for (iter = this->myfile.begin(); iter != this->myfile.end(); iter++)
 {
 outfile.width(15);
 outfile << iter->name;
 outfile.width(15);
 outfile << iter->tel << "\n";
 }
 outfile.close();
}
 
void List::Add()
{
 Person p;
 std::cout << "please input the name:\n";
 std::cin >> p.name;
 std::cout << "please input the phone\n";
 std::cin >> p.tel;
 std::cout << "sucessfully created!\n";
 myfile.push_back(p);
 this->Reflush();
}
 
void List::Del()
{
 if (myfile.empty())
 {
 std::cout << "no info to del!\n";
 return;
 }
 std::string name;
 std::cout << "please input the name you want you del:\n";
 std::cin >> name;
 std::vector<Person>::iterator iter;
 for (iter = this->myfile.begin(); iter != this->myfile.end();)
 {
 if (iter->name == name)
 {
  myfile.erase(iter);//删除对应项
  std::cout << "sucessfully delete!\n";
  this->Reflush();
  return;
 }
 else
  ++iter;
 }
 std::cout << "no info matches!\n";
}
 
void List::Search()
{
 std::string name;
 std::cout << "please input the name you want to search:\n";
 std::cin >> name;
 std::vector<Person>::iterator iter;
 for (iter = this->myfile.begin(); iter != this->myfile.end(); iter++)
 {
 if (name == iter->name)
 {
  std::cout << iter->name << "\t\t" << iter->tel << "\n";
  return;
 }
 }
 std::cout << "no info matches!\n";
}

// contact.cpp : 定义控制台应用程序的入口点。
//
 
#include "stdafx.h"
#include "List.h"
#include <stdlib.h>
#include <iostream>
using namespace std;
 
int Menu()
{
 int num;
 cout << "********************" << endl;
 cout << "*  1   ADD   *" << endl;
 cout << "*  2   DEL   *" << endl;
 cout << "*  3  SEARCH  *" << endl;
 cout << "*  4   SHOW   *" << endl;
 cout << "*  5   EXIT   *" << endl;
 cout << "********************" << endl;
 cout << "input the num:";
 cin >> num;
 return num;
}
 
int _tmain(int argc, _TCHAR* argv[])
{
 List mylist;
 mylist.Readfile();
 int num = Menu();
 bool flags = 1;
 while (flags)
 {
 switch (num)
 {
 case 1:
  mylist.Add();
  break;
 case 2:
  mylist.Del();
  break;
 case 3:
  mylist.Search();
  break;
 case 4:
  mylist.Showfile();
  break;
 case 5:
  cout << "Bye.\n";
  return 0;
 default:
  cout<<"没有该选项请重输！\n";
  break;
 }
 cout << "请输入选项：\n";
 cin >> num;
 }
 system("pause");
 return 0;
}