catalogue
system requirements
The functions to be realized in the system are as follows:
Add contact: contact information includes (name, gender, age, contact number, home address), with a maximum of 1000 people recorded.
Show contacts: displays the information of all contacts in the address book.
Delete contact: delete the corresponding contact by name.
Find contact: find a contact by name and display the information of the contact.
Modify contact: modify contact information by name.
Empty contact: clear all information in the address book.
Launch address book: exit the currently used address book.
Algorithm description
Function menu
Encapsulation function displays this interface
void showMenu()
{
cout << "***********************" << endl;
cout << "*****1，Add a Contact *****" << endl;
cout << "*****2，Show contacts*****" << endl;
cout << "*****3，Delete Contact *****" << endl;
cout << "*****4，find contact *****" << endl;
cout << "*****5，Modify contact*****" << endl;
cout << "*****6，Empty contacts*****" << endl;
cout << "*****0，Exit address book*****" << endl;
cout << "***********************" << endl;
}Exit function
Enter different functions according to different choices of users.
switch (select)
{
case 1://Add a Contact
addPerson(&abs);//Using address passing, you can modify arguments
break;
case 2://Show contacts
showPerson(&abs);
break;
case 3://Delete Contact
deletePersion(&abs);
break;
case 4://find contact
findPerson(&abs);
break;
case 5://Modify contact
modifyPerson(&abs);
break;
case 6://Empty contacts
cleanPerson(&abs);
break;
case 0://Exit address book
cout << "Welcome to use next time!" << endl;
system("pause");
break;
}Add a Contact
1. Design contact structure
struct Person
{
string m_Name;
int m_Sex;
int m_Age;
string m_Phone;
string m_Addr;
};2. Design address book structure
struct adderssBooks
{
struct Person personArray[MAX];
int m_Size;
};3. Create address book in main function
//Create address book structure variable adderssBooks abs; //Initialize the current number of people in the address book abs.m_Size = 0;
4. Encapsulate and add contact function
void addPerson(adderssBooks* abs)
{
//Determine whether the address book is full
if (abs->m_Size == MAX)
{
cout << "The address book is full and cannot be added!" << endl;
return;
}
else
{
string name;
cout << "Please enter your name:" << endl;
cin >> name;
abs->personArray[abs->m_Size].m_Name = name;
cout << "Please enter gender:" << endl;
cout << "1-Male:" << endl;
cout << "2-Female:" << endl;
int sex;
while (true)
{
cin >> sex;
if (sex == 1 || sex == 2)
{
abs->personArray[abs->m_Size].m_Sex = sex;
break;
}
else
{
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter age:" << endl;
int age;
while (true)
{
cin >> age;
if (age > 0 && age < 200)
{
abs->personArray[abs->m_Size].m_Age = age;
break;
}
else
{
cout << "Age should be 0~200 between!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter the phone number:" << endl;
string phone;
while (true)
{
cin >> phone;
if (phone.length()==11)
{
abs->personArray[abs->m_Size].m_Phone = phone;
break;
}
else
{
cout << "Friendly reminder: the phone number is 11 digits!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter your home address:" << endl;
string adderss;
cin >> adderss;
abs->personArray[abs->m_Size].m_Addr = adderss;
//Number of contacts updated
abs->m_Size++;
cout << "User added successfully" << endl;
system("pause");
system("cls");//Clear screen
}
}Show contacts
Encapsulate display contact function
void showPerson(adderssBooks* abs)
{
//Determine whether the address book is empty
if (abs->m_Size == 0)
{
cout << "Current record is empty" << endl;
}
else
{
for (int i = 0; i < abs->m_Size; i++)
{
cout << "full name" << abs->personArray[i].m_Name << "\t";
cout << "Gender" << (abs->personArray[i].m_Sex == 1 ? "male" : "female") << "\t";
cout << "Age" << abs->personArray[i].m_Age << "\t";
cout << "Telephone" << abs->personArray[i].m_Phone << "\t";
cout << "address" << abs->personArray[i].m_Addr << endl;
}
}
system("pause");
system("cls");//Clear screen
}Delete Contact
1. Encapsulate the function to detect whether the contact is empty
int isExist(adderssBooks* abs, string name)
{
for (int i = 0; i < abs->m_Size; i++)
{
if (abs->personArray[i].m_Name == name)
return i;
}
return -1;
}2. Encapsulate the function of deleting contacts
void deletePersion(adderssBooks* abs)
{
cout << "Please enter the contact you want to delete:" << endl;
string name;
cin >> name;
//ret == -1 not found
//ret != - I found it
int ret = isExist(abs, name);
if (ret != -1)
{
for (int i = ret; i < abs->m_Size; i++)
{
abs->personArray[i] = abs->personArray[i + 1];
}
abs->m_Size--;
cout << "Deleted successfully" << endl;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}find contact
Encapsulates functions for finding contacts
void findPerson(adderssBooks* abs)
{
cout << "Please enter the contact you want to find" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1)
{
cout << "full name" << abs->personArray[ret].m_Name << "\t";
cout << "Gender" << (abs->personArray[ret].m_Sex == 1 ? "male" : "female") << "\t";
cout << "Age" << abs->personArray[ret].m_Age << "\t";
cout << "Telephone" << abs->personArray[ret].m_Phone << "\t";
cout << "address" << abs->personArray[ret].m_Addr << endl;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}Modify contact
Encapsulates functions for modifying contacts
void modifyPerson(adderssBooks* abs)
{
cout << "Please enter the contact you want to modify" << endl;
string name;
cin >> name;
//Determine whether the contact exists
int ret = isExist(abs, name);
if (ret != -1)
{
string name;
cout << "Please enter your name:" << endl;
cin >> name;
abs->personArray[ret].m_Name = name;
cout << "Please enter gender:" << endl;
cout << "1-Male:" << endl;
cout << "2-Female:" << endl;
int sex;
while (true)
{
cin >> sex;
if (sex == 1 || sex == 2)
{
abs->personArray[ret].m_Sex = sex;
break;
}
else
{
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter age:" << endl;
int age;
while (true)
{
cin >> age;
if (age > 0 && age < 200)
{
abs->personArray[abs->m_Size].m_Age = age;
break;
}
else
{
cout << "Age should be 0~200 between!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter the phone number:" << endl;
string phone;
while (true)
{
cin >> phone;
if (phone.length() == 11)
{
abs->personArray[abs->m_Size].m_Phone = phone;
break;
}
else
{
cout << "Friendly reminder: the phone number is 11 digits!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter your home address:" << endl;
string adderss;
cin >> adderss;
abs->personArray[ret].m_Addr = adderss;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}Empty contacts
Encapsulates functions that empty contacts
Just set the number of contacts recorded in the address book to 0 and clear it logically.
void cleanPerson(adderssBooks* abs)
{
cout << "Would you like to clear all contact information?" << endl;
cout << "1-yes" << endl;
cout << "2-no" << endl;
int num;
cin >> num;
if (num == 1)
{
abs->m_Size = 0; //Logical emptying
cout << "The address book has been emptied" << endl;
}
else
{
cout << "Press any key to return!" << endl;
}
system("pause");
system("cls");//Clear screen
}Full code:
Main function:
#include <iostream>
#include <string>
using namespace std;
#include"addressBook.h"
int main()
{
//Create address book structure variable
adderssBooks abs;
//Initialize the current number of people in the address book
abs.m_Size = 0;
//Create user selected variables
int select = 0;
while (true)
{
//Menu call
showMenu();
cin >> select;
switch (select)
{
case 1://Add a Contact
addPerson(&abs);//Using address passing, you can modify arguments
break;
case 2://Show contacts
showPerson(&abs);
break;
case 3://Delete Contact
deletePersion(&abs);
break;
case 4://find contact
findPerson(&abs);
break;
case 5://Modify contact
modifyPerson(&abs);
break;
case 6://Empty contacts
cleanPerson(&abs);
break;
case 0://Exit address book
cout << "Welcome to use next time!" << endl;
system("pause");
break;
}
}
system("pause");
return 0;
}Header, 2
#include <iostream>
#include <string>
using namespace std;
#define MAX 1000
//Contact structure
struct Person
{
string m_Name;
int m_Sex;
int m_Age;
string m_Phone;
string m_Addr;
};
//Address book structure
struct adderssBooks
{
struct Person personArray[MAX];
int m_Size;
};
void showMenu();
//Add a Contact
void addPerson(adderssBooks* abs);
//Show all contacts
void showPerson(adderssBooks* abs);
//Determine whether the contact exists
int isExist(adderssBooks* abs, string name);
//Delete Contact
void deletePersion(adderssBooks* abs);
//find contact
void findPerson(adderssBooks* abs);
//Modify contact information
void modifyPerson(adderssBooks* abs);
//Empty contacts
void cleanPerson(adderssBooks* abs);3. Source file
#include"addressBook.h"
void showMenu()
{
cout << "***********************" << endl;
cout << "*****1，Add a Contact *****" << endl;
cout << "*****2，Show contacts*****" << endl;
cout << "*****3，Delete Contact *****" << endl;
cout << "*****4，find contact *****" << endl;
cout << "*****5，Modify contact*****" << endl;
cout << "*****6，Empty contacts*****" << endl;
cout << "*****0，Exit address book*****" << endl;
cout << "***********************" << endl;
}
//Add a Contact
void addPerson(adderssBooks* abs)
{
//Determine whether the address book is full
if (abs->m_Size == MAX)
{
cout << "The address book is full and cannot be added!" << endl;
return;
}
else
{
string name;
cout << "Please enter your name:" << endl;
cin >> name;
abs->personArray[abs->m_Size].m_Name = name;
cout << "Please enter gender:" << endl;
cout << "1-Male:" << endl;
cout << "2-Female:" << endl;
int sex;
while (true)
{
cin >> sex;
if (sex == 1 || sex == 2)
{
abs->personArray[abs->m_Size].m_Sex = sex;
break;
}
else
{
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter age:" << endl;
int age;
while (true)
{
cin >> age;
if (age > 0 && age < 200)
{
abs->personArray[abs->m_Size].m_Age = age;
break;
}
else
{
cout << "Age should be 0~200 between!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter the phone number:" << endl;
string phone;
while (true)
{
cin >> phone;
if (phone.length()==11)
{
abs->personArray[abs->m_Size].m_Phone = phone;
break;
}
else
{
cout << "Friendly reminder: the phone number is 11 digits!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter your home address:" << endl;
string adderss;
cin >> adderss;
abs->personArray[abs->m_Size].m_Addr = adderss;
//Number of contacts updated
abs->m_Size++;
cout << "User added successfully" << endl;
system("pause");
system("cls");//Clear screen
}
}
//Show all contacts
void showPerson(adderssBooks* abs)
{
if (abs->m_Size == 0)
{
cout << "Current record is empty" << endl;
}
else
{
for (int i = 0; i < abs->m_Size; i++)
{
cout << "full name" << abs->personArray[i].m_Name << "\t";
cout << "Gender" << (abs->personArray[i].m_Sex == 1 ? "male" : "female") << "\t";
cout << "Age" << abs->personArray[i].m_Age << "\t";
cout << "Telephone" << abs->personArray[i].m_Phone << "\t";
cout << "address" << abs->personArray[i].m_Addr << endl;
}
}
system("pause");
system("cls");//Clear screen
}
//Determine whether the contact exists
int isExist(adderssBooks* abs, string name)
{
for (int i = 0; i < abs->m_Size; i++)
{
if (abs->personArray[i].m_Name == name)
return i;
}
return -1;
}
//Delete Contact
void deletePersion(adderssBooks* abs)
{
cout << "Please enter the contact you want to delete:" << endl;
string name;
cin >> name;
//ret == -1 not found
//ret != - I found it
int ret = isExist(abs, name);
if (ret != -1)
{
for (int i = ret; i < abs->m_Size; i++)
{
abs->personArray[i] = abs->personArray[i + 1];
}
abs->m_Size--;
cout << "Deleted successfully" << endl;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}
//find contact
void findPerson(adderssBooks* abs)
{
cout << "Please enter the contact you want to find" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1)
{
cout << "full name" << abs->personArray[ret].m_Name << "\t";
cout << "Gender" << (abs->personArray[ret].m_Sex == 1 ? "male" : "female") << "\t";
cout << "Age" << abs->personArray[ret].m_Age << "\t";
cout << "Telephone" << abs->personArray[ret].m_Phone << "\t";
cout << "address" << abs->personArray[ret].m_Addr << endl;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}
//Modify contact information
void modifyPerson(adderssBooks* abs)
{
cout << "Please enter the contact you want to modify" << endl;
string name;
cin >> name;
int ret = isExist(abs, name);
if (ret != -1)
{
string name;
cout << "Please enter your name:" << endl;
cin >> name;
abs->personArray[ret].m_Name = name;
cout << "Please enter gender:" << endl;
cout << "1-Male:" << endl;
cout << "2-Female:" << endl;
int sex;
while (true)
{
cin >> sex;
if (sex == 1 || sex == 2)
{
abs->personArray[ret].m_Sex = sex;
break;
}
else
{
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter age:" << endl;
int age;
while (true)
{
cin >> age;
if (age > 0 && age < 200)
{
abs->personArray[abs->m_Size].m_Age = age;
break;
}
else
{
cout << "Age should be 0~200 between!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter the phone number:" << endl;
string phone;
while (true)
{
cin >> phone;
if (phone.length() == 11)
{
abs->personArray[abs->m_Size].m_Phone = phone;
break;
}
else
{
cout << "Friendly reminder: the phone number is 11 digits!" << endl;
cout << "Error in input, please re-enter:" << endl;
}
}
cout << "Please enter your home address:" << endl;
string adderss;
cin >> adderss;
abs->personArray[ret].m_Addr = adderss;
}
else
{
cout << "No one was found" << endl;
}
system("pause");
system("cls");//Clear screen
}
//Empty contacts
void cleanPerson(adderssBooks* abs)
{
cout << "Would you like to clear all contact information?" << endl;
cout << "1-yes" << endl;
cout << "2-no" << endl;
int num;
cin >> num;
if (num == 1)
{
abs->m_Size = 0; //Logical emptying
cout << "The address book has been emptied" << endl;
}
else
{
cout << "Press any key to return!" << endl;
}
system("pause");
system("cls");//Clear screen
}