一个c++的例子-通讯录

参考B站黑马c++视频教程，这里推荐vscode一个extension，koroFileHeader

可以自动写头注释，非常方便

为啥用英语？因为code runner运行的时候中文输出到terminal为乱码，懒得搞

注意，在vsocode中在struct指针后输入.之后也会自动边为->，我一开始都手动输入的。

 

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/*  * @Author: your name  * @Date: 2021-08-05 11:27:35  * @LastEditTime: 2021-08-06 10:06:16  * @LastEditors: Please set LastEditors  * @Description: In User Settings Edit  * @FilePath: \c++\tongxunlu\main.cpp  */ #include <iostream> #include <string> using namespace std;   #define MAX 1000   struct Person {     string m_name;     int m_sex;     int m_age;     string m_phone;     string m_address; }; struct AddressBook {     struct Person personArr[MAX];     int m_size; };   void showMenu() {     cout << "*************************" << endl;     cout << "**** 1 Add *******" << endl;     cout << "**** 2 Display *******" << endl;     cout << "**** 3 Delete *******" << endl;     cout << "**** 4 Find *******" << endl;     cout << "**** 5 Modify *******" << endl;     cout << "**** 6 Clear *******" << endl;     cout << "**** 0 Quit *******" << endl;     cout << "*************************" << endl; }   void getOnePerson(AddressBook *book, int index) {       cout << "name: ";     cin >> book->personArr[index].m_name;     // cout << "your name is:  " << book->personArr[size].m_name << endl;       int sex;     while (true)     {         cout << "sex (1-male,2-female):";         cin >> sex;         if (sex == 1 || sex == 2)         {             book->personArr[index].m_sex = sex;             break;         }     }       int age;     while (true)     {         cout << "age (from 0 to 150):";         cin >> age;         if (age >= 0 && age <= 150)         {             book->personArr[index].m_age = age;             break;         }     } }   void add(AddressBook *book) {     // string name;     // int sex;     // int age;     // string phone;     // string address;     if (book->m_size == MAX)     {         cout << "full!" << endl;         return;     }     else     {         int size = book->m_size;           getOnePerson(book, size);           book->m_size += 1;           cout << "one person added!" << endl;         system("pause");         system("cls");     } }   void displayOnePerson(AddressBook *book, int index) {     string name = book->personArr[index].m_name;     int sex = book->personArr[index].m_sex;     int age = book->personArr[index].m_age;     cout << name << "\t" << (sex == 1 ? "male" : "female") << "\t" << age << endl; }   void display(AddressBook *book) {     int size = book->m_size;     if (size == 0)     {         cout << "the book is empty!" << endl;     }     else     {         cout << "name\tsex\tage" << endl;         for (int i = 0; i < size; i++)         {             displayOnePerson(book, i);         }     }     system("pause");     system("cls"); }   int isExist(AddressBook *book, string name) {     for (int i = 0; i < book->m_size; i++)     {         if (book->personArr[i].m_name == name)         {             return i;         }     }     return -1; }   void deletePerson(AddressBook *book) {     string name;     cout << "the name to delete: ";     cin >> name;       int is_exist;     is_exist = isExist(book, name);       if (is_exist == -1)     {           cout << "not exist" << endl;     }     else     {         cout << "exist" << endl;         cout << "deleted" << endl;     } } void find(AddressBook *book) {     string name;     cout << "the name to find: ";     cin >> name;       int is_exist;     is_exist = isExist(book, name);     int index;     index = is_exist;       if (is_exist != -1)     {         cout << "finded" << endl;         cout << "name\tsex\tage" << endl;         displayOnePerson(book, index);     }     else     {         cout << "not exist" << endl;     } } void modify(AddressBook *book) {     string name;     cout << "the name to modify: ";     cin >> name;       int is_exist;     is_exist = isExist(book, name);     int index;     index = is_exist;       if (is_exist != -1)     {         cout << "the person finded" << endl;         getOnePerson(book, index);         cout << "modified" << endl;     }     else     {         cout << "not exist" << endl;     } } void clear(AddressBook *book) {     book->m_size = 0;     cout << "cleared" << endl; }   int main() {       AddressBook book;     book.m_size = 0;       int select = 0;       while (true)     {         showMenu();         cin >> select;           switch (select)         {         case 1: //add             add(&book);             break;         case 2: //display             display(&book);             break;         case 3: //delete             deletePerson(&book);             break;         case 4: //find             find(&book);             break;         case 5: //modify             modify(&book);             break;         case 6: //clear             clear(&book);             break;         case 0: //quit             cout << "quited" << endl;             system("pause");             return 0;             break;         default:             break;         }     } }