C++ container vector implements address book function

2020-06-23 01:17:31
OfStack

When I learned C language before, I used linked list to realize the basic function of address book. Recently wrote a version of the C++ address book, the reference code is shown below.

main.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  main.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  16 when 47 points 52 seconds 
Description  :   The main function 
Funcion List  :  main()
*****************************************************/
 
#include "../../include/head.h"
 
personMessage pep;
vector<personMessage> person;
vector<personMessage>::iterator it;
 
int main()
{
 //personMessage pep;
 //vector<personMessage> person;
 
 char ch = 0;
 
 //system("clear");
 
 while(ch != 'q')
 {
 if((ch != 'a') && (ch != 'c') && (ch != 'd') && (ch != 'f'))
 {
  system("clear");
  ch = book_ui();
 }
 
 switch(ch)
 {
      case 'a':
  {
  ch = add_person();
  break;
  }
  case 'c':
  {
  ch = change_person();
  break;
  }
  case 'd':
  {
  ch = delete_person();
  break;
  }
  case 'e':
  {
  ch = display_person();
  break;
  }
  case 'f':
  {
  ch = find_person();
  break;
  }
  case 'q':
  {
  cout << "Byebye!" << endl;
  return 0;
  break;
  }
  default:
  {
  cout << "input error!" << endl;
  break;
  }
 }
 }
 
  return 0;
}

head.h


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  head.h
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  17 when 11 points 29 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#ifndef __HEAD_H__
#define __HEAD_H__
 
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
 
#include <stdio.h>
#include <string.h>
 
using namespace std;
 
class personMessage
{
public:
 personMessage();
 personMessage(string s);
 ~personMessage();
 
 personMessage& operator=(string s);
 personMessage& operator=(personMessage& other);
 
 /* sort The sorting algorithm needs to be overloaded '<' Pay attention to, const! */
 bool operator<(const personMessage& p) const;
 bool operator>(const personMessage& p) const;
 bool operator<=(const personMessage& p) const;
 bool operator>=(const personMessage& p) const;
  
 bool operator==(string s);
 
 friend istream& operator>>(istream& in, personMessage& p);
 friend ostream& operator<<(ostream& out, personMessage& p);
 
 int selectFlag; // Which to choose 1 A private member! 
 
private:
 string name_;
 string addr_;
 string phone_;
};
 
extern personMessage pep;
extern vector<personMessage> person;
extern vector<personMessage>::iterator it;
 
extern char book_ui();
extern char add_person();
extern char change_person();
extern char delete_person();
extern char display_person();
extern char find_person();
 
#endif

book.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  book.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  18 when 53 points 19 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
personMessage::personMessage() : selectFlag(0)
{
 cout << "default coonstructor!" << endl;
}
 
personMessage::personMessage(string s)
{
 name_ = s;
}
 
personMessage::~personMessage()
{
 cout << "destroy person message!" << endl;
}
 
#if 1
personMessage& personMessage::operator=(string s)
{
 name_ = s;
 return *this;
}
#endif
 
personMessage& personMessage::operator=(personMessage& other)
{
 if(this == &other)
 {
 return *this;
 }
 
 name_ = other.name_;
 addr_ = other.addr_;
 phone_ = other.phone_;
 return *this;
}
 
bool personMessage::operator>(const personMessage& p) const
{
 return name_ > p.name_;
}
 
bool personMessage::operator>=(const personMessage& p) const
{
 return name_ >= p.name_;
}
 
bool personMessage::operator<(const personMessage& p) const
{
 return name_ < p.name_;
}
 
bool personMessage::operator<=(const personMessage& p) const
{
 return name_ <= p.name_;
}
 
bool personMessage::operator==(string s)
{
 if(selectFlag == 1)
 {
 return name_ == s;
 }
 else if(selectFlag == 2)
 {
 return addr_ == s;
 }
 else if(selectFlag == 3)
 {
 return phone_ == s;
 }
 else
 {
 return false;
 }
}
 
#if 1
istream& operator>>(istream& in, personMessage& p)
{
 string name;
 string addr;
 string phone;
 
 cout << " Please enter a new member name :" << endl;
 in >> name;
 p.name_ = name;
 
 cout << " Please enter the new member address :" << endl;
 in >> addr;
 p.addr_ = addr;
 
 cout << " Please enter the new member number :" << endl;
 in >> phone;
 p.phone_ = phone;
 
 return in;
}
 
ostream& operator<<(ostream& out, personMessage& p)
{
 out << " The name : " << p.name_ << endl;
 out << " address : " << p.addr_ << endl;
 out << " The phone : " << p.phone_ << endl;
 
 return out;
}
#endif

book_ui.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  book_ui.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  16 when 49 points 50 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char book_ui()
{
 char ch = 0;
 
 cout << " ____________________________________" << endl;
 cout << "|                  |" << endl;
 cout << "|     Welcome to the address book system  v2.0   |" << endl;
 cout << "|                  |" << endl;
 cout << "|====================================|" << endl;
 cout << "|                  |" << endl;
 cout << "|     a.  Add new members       |" << endl;
 cout << "|     c.  Modify member information       |" << endl;
 cout << "|     d.  Delete member information       |" << endl;
 cout << "|     e.  Show all the members       |" << endl;
 cout << "|     f.  Find member information       |" << endl;
 cout << "|     q.  Quit the address book system      |" << endl;
 cout << "|____________________________________|" << endl;
 cout << endl << " Please enter your choice :" << endl;
 cin >> ch;
 
 return ch;
}

add_person.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  add_person.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  17 when 22 points 56 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char add_person()
{
 cout << "This is add person!" << endl;
 
#if 0
 getchar();
 string tmp;
 
 getline(cin, tmp);
 
 cout << "tmp = " << tmp << endl;
 
 pep = tmp;
#endif
 
 /*  Enter the new member information  */
 cin >> pep;
 cout << pep << endl;
 
 /*  to vector Insert elements  */
 person.push_back(pep);
 
 cout << " Member information inserted successfully !" << endl;
 
 char ch = 0;
 
 cout << " Return to the main menu? (y/n)" << endl;
 getchar();
 cin >> ch;
 
 if(ch == 'y')
 {
 return 0;
 }
 else if(ch == 'n')
 {
 return 'a';
 }
 else
 {
 cout << " Typo! " << endl;
 return 0;
 }
}

delete_person.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  delete_person.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  18 when 29 points 33 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char delete_person()
{
 cout << "This is delete person!" << endl;
 
 /*  Deletes member information  */
 string pep_info;
 
 int d_flag = 0;
 int d_key = 0;
 
 cout << " Please enter how you want to find it (1- The name /2- address /3- The phone ):" << endl;
 cin >> d_key;
 
 switch(d_key)
 {
 case 1:
 {
  cout << " Please enter the name of the member you want to delete :" << endl;
  cin >> pep_info;
  break;
 }
 case 2:
 {
  cout << " Please enter the address of the member you want to delete :" << endl;
  cin >> pep_info;
  break;
 }
 case 3:
 {
  cout << " Please enter the number of members you want to delete :" << endl;
  cin >> pep_info;
  break;
 }
 default:
 {
  cout << " Incorrect input! " << endl;
  return 0;
  break;
 }
 }
 
 for(it = person.begin(); it != person.end(); )
 {
 it->selectFlag = d_key;
 if(*it == pep_info)
 {
  person.erase(person.begin()+d_flag, person.begin()+d_flag+1);
  cout << " Member information deleted successfully !" << endl;
 }
 else
 {
  ++it;
  d_flag++;
 }
 }
 
 char ch = 0;
 
 cout << " Whether to return to the main menu ?(y/n)" << endl;
 getchar();
 cin >> ch;
 
 if(ch == 'y')
 {
 return 0;
 }
 else if(ch == 'n')
 {
 return 'd';
 }
 else
 {
 cout << " Typo! " << endl;
 return 0;
 }
}

change_person.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  change_person.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  18 when 20 points 15 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char change_person()
{
 cout << "This is change person!" << endl;
 
 /*  Modify the member's information  */
 string pep_info;
 
 int ch_flag = 0;
 int c_key = 0;
 
 cout << " Please enter how you want to find it (1- The name /2- address /3- The phone ):" << endl;
 cin >> c_key;
 
 switch(c_key)
 {
 case 1:
 {
  cout << " Please enter the name of the member you want to change :" << endl;
  cin >> pep_info;
  break;
 }
 case 2:
 {
  cout << " Please enter the address of the member you want to modify :" << endl;
  cin >> pep_info;
  break;
 }
 case 3:
 {
  cout << " Please enter the number of the member you want to modify :" << endl;
  cin >> pep_info;
  break;
 }
 default:
 {
  cout << " Incorrect input! " << endl;
  return 0;
  break;
 }
 }
 
 for(it = person.begin(); it != person.end(); ++it)
 {
 it->selectFlag = c_key;
 if(*it == pep_info)
 {
  ch_flag = 1;
  cin >> *it;
  cout << " Member information modified successfully !" << endl;
 }
 }
 
 if(ch_flag != 1)
 {
 cout << " The member was not found !" << endl;
 }
 
 char ch = 0;
 
 cout << " Whether to return to the main menu ?(y/n)" << endl;
 getchar();
 cin >> ch;
 
 if(ch == 'y')
 {
 return 0;
 }
 else if(ch == 'n')
 {
 return 'c';
 }
 else
 {
 cout << " Typo! " << endl;
 return 0;
 }
}

find_person.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  find_person.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  18 when 21 points 59 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char find_person()
{
 cout << "This is find person!" << endl;
 
 int f_key = 0;
 int f_flag = 0;
 /*  Enter the name of the lookup  */
 string f_info;
 
 cout << " Please enter how to find (1- The name /2- address /3- The phone )" << endl;
 cin >> f_key;
 
 switch(f_key)
 {
 case 1:
 {
  cout << " Please enter the name of the member you want to find :" << endl;
  cin >> f_info;
  break;
 }
 case 2:
 {
  cout << " Please enter the address where you want to find the member :" << endl;
  cin >> f_info;
  break;
 }
 case 3:
 {
  cout << " Please enter the name of the member you want to find :" << endl;
  cin >> f_info;
  break;
 }
 default:
 {
  cout << " Incorrect input! " << endl;
  return 0;
  break;
 }
 }
 
 //pep.selectFlag = 2; //it Iterators are changing , Cannot assign directly. 
 
 for(it = person.begin(); it != person.end(); ++it)
 {
 it->selectFlag = f_key;
 if(*it == f_info)
 {
  f_flag = 1;
  cout << " Find the member! " << endl;
  cout << *it << endl;
 }
 }
 
 if(f_flag != 1)
 {
 cout << " The member was not found !" << endl;
 }
 
 char ch = 0;
 
 cout << " Whether to return to the main menu ?(y/n)" << endl;
 getchar();
 cin >> ch;
 
 if(ch == 'y')
 {
 return 0;
 }
 else if(ch == 'n')
 {
 return 'f';
 }
 else
 {
 cout << " Typo! " << endl;
 return 0;
 }
}

display_person.cpp


/*****************************************************
Copyright (C) :  2017-2018 
File name   :  display_person.cpp
Author     :  Zhengqijun
Date      :  2017 years 02 month 12 day   Sunday  18 when 23 points 04 seconds 
Description  :  
Funcion List  :  
*****************************************************/
 
#include "../../include/head.h"
 
char display_person()
{
 cout << "This is display person!" << endl;
 
 sort(person.begin(), person.end());
 
 for(it = person.begin(); it != person.end(); ++it)
 {
 cout << *it << endl;
 }
 
 char ch = 0;
 cout << " Press any key to return " << endl;
 getchar();
 cin >> ch;
 return 0;
}