"AlirezaMortaji40333053"

Test.cpp

@@ -1,159 +1,191 @@
 #include <iostream>
+#include <functional> // For std::hash
 #include <string>
 using namespace std;
 const int MAX = 100;
 
-template<typename T,typename F>
-int myfind(T* begin,T* end,F f) {
-    for (T* itr = begin; itr != end; itr++) {
-
-       ?
+template <typename T, typename F>
+int myfind(T *begin, T *end, F f)
+{
+  for (T *itr = begin; itr != end; itr++)
+  {
 
+    if (f(*itr))
+    {
+      return itr - begin;
     }
-    return -1;
-
+  }
+  return -1;
 }
 
-class AbstractUser {
+class AbstractUser
+{
 public:
-    AbstractUser(const string& username, const string& password)
-        : username(username), password(password) {}
+  AbstractUser(const string &username, const string &password)
+      : username(username), password(password) {}
 
-    virtual ~AbstractUser() = default;
+  virtual ~AbstractUser() = default;
 
-    virtual void displayRole() const = 0;
-    virtual bool hasAccessToSee(AbstractUser*) const = 0;
+  virtual void displayRole() const = 0;
+  virtual bool hasAccessToSee(AbstractUser *) const = 0;
 
-    string getUsername() const {
-        return username;
-    }
-    bool isPasswordCorrect(const string& pass) {
-        return (pass == password);
-    }
+  string getUsername() const
+  {
+    return username;
+  }
+  bool isPasswordCorrect(const string &pass)
+  {
+    return (pass == password);
+  }
 
 protected:
-    string username;
-    string password;
+  string username;
+  string password;
 };
 
-class Student : public AbstractUser {
+class Student : public AbstractUser
+{
 public:
-    Student(const string& username, const string& password, int grade)
-        : AbstractUser(username, password), grade(grade) {}
-
-    void displayRole() const override {
-        cout << "Student: " << username << ", Grade: " << grade << endl;
-    }
-    bool hasAccessToSee(AbstractUser* user) const override {
-        return false;//doesnt have access for any type
-    }
+  Student(const string &username, const string &password, int grade)
+      : AbstractUser(username, password), grade(grade) {}
+
+  void displayRole() const override
+  {
+    cout << "Student: " << username << ", Grade: " << grade << endl;
+  }
+  bool hasAccessToSee(AbstractUser *user) const override
+  {
+    return false;
+  }
 
 private:
-    int grade;
+  int grade;
 };
 
-class Staff : public AbstractUser {
+class Staff : public AbstractUser
+{
 public:
-    Staff(const string& username, const string& password, int salary)
-        : AbstractUser(username, password), salary(salary) {}
-
-    void displayRole() const override {
-        cout << "Staff: " << username << ", Salary: " << salary << endl;
-    }
-    bool hasAccessToSee(AbstractUser* user) const override {
-        if (? != nullptr) {
-            return true;
-        }
+  Staff(const string &username, const string &password, int salary)
+      : AbstractUser(username, password), salary(salary) {}
+
+  void displayRole() const override
+  {
+    cout << "Staff: " << username << ", Salary: " << salary << endl;
+  }
+  bool hasAccessToSee(AbstractUser *user) const override
+  {
+    if (dynamic_cast<Student *>(user) != nullptr)
+    { // not the best way
+      return true;
     }
+  }
 
 private:
-    int salary;
+  int salary;
 };
 
-class Admin : public Staff {
+class Admin : public Staff
+{
 public:
-    Admin(const string& username, const string& password, int salary)
-        : Staff(username, password, salary) {}
-
-    void displayRole() const override {
-
-        cout << "Admin ";
-        Staff::displayRole();
+  Admin(const string &username, const string &password, int salary)
+      : Staff(username, password, salary) {}
+
+  void displayRole() const override
+  {
+
+    cout << "Admin ";
+    Staff::displayRole();
+  }
+  bool hasAccessToSee(AbstractUser *user) const override
+  {
+    if (dynamic_cast<Admin *>(user) == nullptr)
+    { // not the best way
+      return true;
     }
-    ?
+  }
 };
 
-AbstractUser* current_user;
-AbstractUser* users[100];
+AbstractUser *current_user;
+AbstractUser *users[100];
 int user_cnt;
 
-void print() {
-    if (!current_user) {
-        return;
-    }
-    for (AbstractUser* user : users) {
-        if (?) {
-            user->displayRole();
-        }
+void print()
+{
+  if (!current_user)
+  {
+    return;
+  }
+  for (AbstractUser *user : users)
+  {
+    if (current_user->hasAccessToSee(user))
+    {
+      user->displayRole();
     }
+  }
 }
 
-void addStudent(string username, string password, int grade) {
-    int index = ?;
-    if (index != -1) {
-        return;
-    }
-    if (dynamic_cast<Admin*>(current_user) == nullptr){
-        cout << "permision denied"<<endl;
-        return;
-    }
-    Student* st = new Student(username, password, grade);
-    users[user_cnt ++] = st;
+void addStudent(string username, string password, int grade)
+{
+  int index = myfind(users, users + user_cnt, [=](AbstractUser *u1)
+                     { return (u1->getUsername() == username); });
+  if (index != -1)
+  {
+    return;
+  }
+  if (dynamic_cast<Admin *>(current_user) == nullptr)
+  {
+    cout << "permision denied" << endl;
+    return;
+  }
+  Student *st = new Student(username, password, grade);
+  users[user_cnt++] = st;
 }
 
-int main() {
-    Student s("erfan", "pass1", 12);
-    Student s2("rasool", "pass2", 12);
-    Staff st("alireza", "staffpass", 1000);
-    Staff st("kiyan", "staffpass", 1000);
-    Admin a("yalda", "adminpass",1200);
-    user_cnt = 5;
-    users[0] = &s;
-    ?
-    ?
-    ?
-    ?
-
-    while (1) {
-        string username, password;
-        cout << "username: ";
-        cin >> username;
-        cout << "password:";
-        cin >> password;
-        int index = myfind(users, users + user_cnt, ?);
-        if (index!=-1) {
-            current_user = users[index];
-            break;
-        }
-
+int main()
+{
+  Student s("st1", "pass1", 12);
+  Student s2("st2", "pass2", 12);
+  Staff st("staff1", "staffpass", 1000);
+  Admin a("admin1", "adminpass", 1000);
+  user_cnt = 4;
+  users[0] = &s;
+  users[1] = &s2;
+  users[2] = &st;
+  users[3] = &a;
+
+  while (1)
+  {
+    string username, password;
+    cout << "username: ";
+    cin >> username;
+    cout << "password:";
+    cin >> password;
+    int index = myfind(users, users + user_cnt, [=](AbstractUser *u1)
+                       { return (u1->getUsername() == username && u1->isPasswordCorrect(password)); });
+    if (index != -1)
+    {
+      current_user = users[index];
+      break;
     }
-    int choice;
-    while (1) {
-        cout << "1.print" << endl;
-        cout<<"2.add student"<<endl;
-        cin >> choice;
-        if (choice == 1) {
-            print();
-        }
-        else {
-            string user, pass;
-            int grade;
-            cin >> user >> pass >> grade;
-            addStudent(user, pass, grade);
-
-        }
-
+  }
+  int choice;
+  while (1)
+  {
+    cout << "1.print" << endl;
+    cout << "2.adduser" << endl;
+    cin >> choice;
+    if (choice == 1)
+    {
+      print();
+    }
+    else
+    {
+      string user, pass;
+      int grade;
+      cin >> user >> pass >> grade;
+      addStudent(user, pass, grade);
     }
+  }
 
-    return 0;
+  return 0;
 }