Added object oriented programming concept codes C++

01_class_obj.cpp

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+#include <iostream>
+using namespace std;
+
+class car
+{
+    char col[10];
+public:
+    int speed;
+    void get(int distance, int fuel)
+    {
+        cout << "the car has DISTANCE :" << distance << "FUEL :" << fuel << endl;
+    }
+    void milage(float distance, float fuel);
+
+    void carspeed()
+    {
+        cout << "SPEED " << speed;
+    }
+
+} audi;
+
+void car ::milage(float d, float f)
+{
+    float carmil = d / f;
+    cout << "MILAGE IS :" << carmil << endl;
+}
+
+int main()
+{
+    car swift;
+    swift.get(10, 10);
+    audi.get(19, 20);
+    audi.milage(1900, 20);
+    swift.speed = 10;
+    swift.carspeed();
+    return 0;
+}
+
+
+//This program is contributed by YASH RAJ MANI

02_constructor.cpp

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+#include <iostream>
+using namespace std;
+
+class constructordemo
+{
+    public:
+    constructordemo()
+    {
+        cout<<"I AM THE CONSTRUCTOR "<<endl;
+        cout<<"no one calls me ! i get auto called when u declare class object! "<<endl;
+    }
+
+};
+
+int main()
+{
+    constructordemo obj;
+
+
+    return 0;
+}
+
+
+//This program is contributed by YASH RAJ MANI 

03_destructor.cpp

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+#include <iostream>
+using namespace std;
+
+class destructordemo
+{
+public:
+    destructordemo()
+    {
+        cout << "i am at begining I AM CONSTRUCTOR " << endl;
+    }
+    ~destructordemo()
+    {
+        cout << "no matter where i am after all ends, I AM destructor " << endl;
+    }
+    void disp()
+    {
+        cout << "helloo  i am member function " << endl;
+    }
+};
+
+int main()
+{
+    destructordemo d1;
+    d1.disp();
+
+    return 0;
+}
+//This program is contributed by YASH RAJ MANI