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Author: code-with-faraz

Abstraction.cpp

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+#include <iostream>
+using namespace std;
+
+// abstract class  
+class AbstractEmployee {
+    virtual void askForPromotion()=0;
+};
+
+class Employee: AbstractEmployee{
+private:
+    string Name;
+    string Company;
+    int Age;
+
+public:
+    // Constructor
+    Employee(string name, string company, int age) {
+        Name = name;
+        Company = company;
+        Age = age;
+    }
+
+    // Setter for Name
+    void setName(string name) {
+        Name = name;
+    }
+
+    // Getter for Name
+    string getName() {
+        return Name;
+    }
+
+    // Setter for Company
+    void setCompany(string company) {
+        Company = company;
+    }
+
+    // Getter for Company
+    string getCompany() {
+        return Company;
+    }
+
+    // Setter for Age
+    void setAge(int age) {
+        if(age<=18)
+        Age = age;
+    }
+
+    // Getter for Age
+    int getAge() {
+        return Age;
+    }
+
+    // Method to introduce yourself
+    void introduceYourself() {
+        cout << "Name: " << Name << endl;
+        cout << "Company: " << Company << endl;
+        cout << "Age: " << Age << endl;
+    }
+
+    void askForPromotion(){
+        if(Age>30)
+            cout << Name <<  " got promoted!" << endl;
+            else
+            cout << "Sorry, No promotion for you!"<< endl;
+    }
+};
+
+int main() {
+    // Create Employee objects using the constructor
+    Employee employee1 = Employee("Faraz Mirza", "Google", 40);
+    Employee employee2 = Employee("Joseph Joestar", "Speedwagon Foundation", 25);
+
+    employee1.askForPromotion();
+    employee2.askForPromotion();
+    
+
+    return 0;
+}

Encapsulation.cpp

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+#include <iostream>
+using namespace std;
+
+class Employee {
+private:
+    string Name;
+    string Company;
+    int Age;
+
+public:
+    // Constructor
+    Employee(string name, string company, int age) {
+        Name = name;
+        Company = company;
+        Age = age;
+    }
+
+    // Setter for Name
+    void setName(string name) {
+        Name = name;
+    }
+
+    // Getter for Name
+    string getName() {
+        return Name;
+    }
+
+    // Setter for Company
+    void setCompany(string company) {
+        Company = company;
+    }
+
+    // Getter for Company
+    string getCompany() {
+        return Company;
+    }
+
+    // Setter for Age
+    void setAge(int age) {
+        if(age<=18)
+        Age = age;
+    }
+
+    // Getter for Age
+    int getAge() {
+        return Age;
+    }
+
+    // Method to introduce yourself
+    void introduceYourself() {
+        cout << "Name: " << Name << endl;
+        cout << "Company: " << Company << endl;
+        cout << "Age: " << Age << endl;
+    }
+};
+
+int main() {
+    // Create Employee objects using the constructor
+    Employee employee1 = Employee("Faraz Mirza", "Google", 21);
+    employee1.introduceYourself();
+
+    Employee employee2 = Employee("Joseph Joestar", "Speedwagon Foundation", 25);
+    employee2.introduceYourself();
+
+    // Set and get age
+    employee1.setAge(15);
+    cout << employee1.getName() << " is " << employee1.getAge() << " years old" << endl;
+
+    return 0;
+}

Inheritance.cpp

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+#include <iostream>
+using namespace std;
+
+// abstract class  
+class AbstractEmployee {
+    virtual void askForPromotion()=0;
+};
+
+class Employee: AbstractEmployee{
+private:
+    string Company;
+    int Age;
+
+protected:
+    string Name;
+
+public:
+    // Constructor
+    Employee(string name, string company, int age) {
+        Name = name;
+        Company = company;
+        Age = age;
+    }
+
+    // Setter for Name
+    void setName(string name) {
+        Name = name;
+    }
+
+    // Getter for Name
+    string getName() {
+        return Name;
+    }
+
+    // Setter for Company
+    void setCompany(string company) {
+        Company = company;
+    }
+
+    // Getter for Company
+    string getCompany() {
+        return Company;
+    }
+
+    // Setter for Age
+    void setAge(int age) {
+        if(age<=18)
+        Age = age;
+    }
+
+    // Getter for Age
+    int getAge() {
+        return Age;
+    }
+
+    // Method to introduce yourself
+    void introduceYourself() {
+        cout << "Name: " << Name << endl;
+        cout << "Company: " << Company << endl;
+        cout << "Age: " << Age << endl;
+    }
+
+    void askForPromotion(){
+        if(Age>30)
+            cout << Name <<  " got promoted!" << endl;
+            else
+            cout << "Sorry, No promotion for you!"<< endl;
+    }
+};
+
+class Developer: public Employee{
+public:
+    string FavProgrammingLanguage;
+    Developer(string name, string company, int age, string favProgrammingLanguage)
+    : Employee(name, company, age)
+    {
+        FavProgrammingLanguage = favProgrammingLanguage;
+    }    
+
+    void fixBug(){
+        cout << Name << " fixed bug using " << FavProgrammingLanguage << endl;
+    }
+
+};
+
+class teacher: public Employee{
+public:
+    string Subject;
+    void prepareLesson()
+    {
+        cout << Name << " is preparing " << Subject << " lesson" << endl;
+    }
+
+    teacher(string name, string company, int age, string Subject)
+    : Employee(name, company, age)
+    {
+        this->Subject = Subject;
+    }
+};
+
+// Main function
+int main() {
+    Developer d = Developer("Faraz Mirza", "YouTube", 40, "C++");
+    teacher t = teacher("Jack","Army Public School",35,"Maths");
+    t.prepareLesson();
+    t.askForPromotion();
+        return 0;
+}

Operator_Overloading.cpp

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+#include<iostream>
+#include<string>
+#include<list>
+using namespace std;
+
+struct YouTubeChannel{
+string Name;
+int SubscribersCount;
+
+YouTubeChannel(string name, int subscribers) {
+    Name = name;
+    SubscribersCount = subscribers;
+}
+
+bool operator == (const YouTubeChannel& ytChannel) const{
+    return this->Name == ytChannel.Name;
+
+}
+
+};
+
+ostream& operator<<(ostream& COUT, YouTubeChannel& ytChannel){
+    COUT<<"Name: "<<ytChannel.Name<<endl;
+    COUT<<"Subscribers: "<<ytChannel.SubscribersCount<<endl;
+    return COUT;
+}
+
+struct MyCollection{
+  list<YouTubeChannel> myChannels;
+
+    void operator += (YouTubeChannel& channel){
+        this->myChannels.push_back(channel);
+    }
+
+    void operator -= (YouTubeChannel& channel){
+        this->myChannels.remove(channel);
+    } 
+    
+};
+
+ostream& operator<<(ostream& COUT, MyCollection& myCollection){
+    for(YouTubeChannel ytChannel: myCollection.myChannels){
+        COUT<<ytChannel<<endl;
+    }
+    return COUT;
+}
+
+int main(){
+
+    YouTubeChannel yt1= YouTubeChannel("Miraculer 2.0", 13000);
+    YouTubeChannel yt2= YouTubeChannel("Starburst", 10000);
+    MyCollection myCollection;
+    myCollection += yt1;
+    myCollection += yt2;
+    myCollection -= yt1;
+    cout << myCollection;
+
+
+    cin.get();
+}