User类 新增共有属性Current ID

 1 #ifndef HEADER_U
 2 #define HEADER_U
 3 #include<string>
 4 #include<iostream>
 5 using namespace std;
 6 
 7 //User类声明
 8 class User {
 9 public:
10     void setInfo(string name0, string passwd0 = "111111", int id0 = 1);//支持设置用户信息
11     void changePasswd();                               //支持修改密码
12     void printInfo();                                  //支持打印用户信息
13 private:
14     int id;
15     static int CurrentID;
16     string name;
17     string passwd;
18 };
19 int User::CurrentID = 999;                             //静态成员初始化
20 
21 void User::setInfo(string name0, string passwd0, int id0) {
22     id = ++CurrentID;
23     name = name0;
24     passwd = passwd0;
25 }
26 
27 void User::changePasswd() {
28     string passwd1, passwdN;
29     int n = 1;
30     cout << "Enter the old passwd:";
31     cin >> passwd1;
32     while (n <= 3) {
33         if (User::passwd == passwd1) {
34             cout << "Enter the new passwd:";
35             cin >> passwdN;
36             break;
37         }
38         else if (n < 3 && (User::passwd != passwd1)) {
39             cout << "passwd input error,Please re-Enter again:";
40             cin >> passwd1;
41             n++;
42         }
43         else if (n == 3 && (User::passwd != passwd1)) {
44             cout << "Please try after a while." << endl;
45             break;
46         }
47     }
48 }
49 
50 void User::printInfo() {
51     cout << "CurrentID:\t" << CurrentID << endl;
52     cout << "id:\t\t" << id << endl;
53     cout << "name:\t\t" << name << endl;
54     cout << "passwd:\t\t" << "******" << endl;
55 }
56 
57 #endif

 1 #include<iostream>
 2 #include"user.h"
 3 using namespace std;
 4 
 5 int main() {
 6     cout << "testing 1......" << endl << endl;
 7     User user1;
 8     user1.setInfo("Leonard");
 9     user1.printInfo();
10 
11     cout << endl << "testing 2......" << endl << endl;
12     User user2;
13     user2.setInfo("Jonny", "92197");
14     user2.printInfo();
15 
16     system("pause");
17     return 0;
18 }