Diagram (and C++ Code) Explaining Classes, Objects, Variables and Methods Using Airplanes

Diagram (and C++ code) that explains how classes, objects, methods and variables work in object oriented programming using airplanes as a real world analogy. The class is called "Airplane" and the objects are different types of airplanes: Cessna Skyhawk, Gulfstream G150 and a Boeing 727. Variables: TopSpeed, Range Methods: TakeOff, Climb, Land

// Airplane class/object
// Matt R
// Used Code::Blocks IDE with GCC compiler

#include 
#include 

using namespace std;

class Airplane {
    public:
        int TopSpeed;
        int Range;
        string EngineType;
        // Methods
        void Takeoff() {
            cout << "The Cessna Skyhawk is taking off from runway." << endl;
        }  // end method TakeOff
        void Climb() {
            cout << "The Cessna Skyhawk is climbing to 1,500 feet." << endl;
        }  // end Climb method
        void Land() {
            cout << "The Cessna Skyhawk is landing onto the runway." << endl;
        }  // end Land method
    };  // end class Airplane

int main() {
    // Create object of class Airplane
    Airplane CessnaSkyhawk;
    // Set variables
    CessnaSkyhawk.TopSpeed = 142;
    CessnaSkyhawk.Range = 640;
    // Print out variables
    cout << "The Cessna Skyhawk top speed is: " << CessnaSkyhawk.TopSpeed << endl;
    cout << "The Cessna Skyhawk range is: " << CessnaSkyhawk.Range << endl;
    // Call methods from class Airplane
    CessnaSkyhawk.Takeoff();
    CessnaSkyhawk.Climb();
    CessnaSkyhawk.Land();

  return 0;
}  // end main function

Supplies

1. C++ compiler like gcc.
2. IDE like CodeBlocks
3. Computer

Step 1: Diagram Explaining Classes, Objects, Variables and Methods Using Airplanes

Diagram (and C++ code) that explains how classes, objects, methods and variables work in object oriented programming using airplanes as a real world analogy.The class is called "Airplane" and the objects are different types of airplanes: Cessna Skyhawk, Gulfstream G150 and a Boeing 727.Variables: TopSpeed, RangeMethods: TakeOff, Climb, Land

// Airplane class/object
// Matt R
// Used Code::Blocks IDE with GCC compiler

#include 
#include 

using namespace std;

class Airplane {
    public:
        int TopSpeed;
        int Range;
        string EngineType;
        // Methods
        void Takeoff() {
            cout << "The Cessna Skyhawk is taking off from runway." << endl;
        }  // end method TakeOff
        void Climb() {
            cout << "The Cessna Skyhawk is climbing to 1,500 feet." << endl;
        }  // end Climb method
        void Land() {
            cout << "The Cessna Skyhawk is landing onto the runway." << endl;
        }  // end Land method
    };  // end class Airplane

int main() {
    // Create object of class Airplane
    Airplane CessnaSkyhawk;
    // Set variables
    CessnaSkyhawk.TopSpeed = 142;
    CessnaSkyhawk.Range = 640;
    // Print out variables
    cout << "The Cessna Skyhawk top speed is: " << CessnaSkyhawk.TopSpeed << endl;
    cout << "The Cessna Skyhawk range is: " << CessnaSkyhawk.Range << endl;
    // Call methods from class Airplane
    CessnaSkyhawk.Takeoff();
    CessnaSkyhawk.Climb();
    CessnaSkyhawk.Land();

  return 0;
}  // end main function

Step 2: Diagram in ASCII Format

```
+----------------------------------------------------------+
|                           Airplane                      |
|                        (Parent Class)                   |  
+-----------------------------------+----------------------+
                                   \|/
+-----------------------------------+----------------------+
|                           Attributes                    |
|                                                         |
|                    - TopSpeed: integer                  |
|                     - Range: integer                    |
+----------------------------------------------------------+
                                    |
                                   \|/
 +----------------------------------+---------------------+
 |                            Methods                     |
 |                                                        |
 |     			 - TakeOff(): void                | 
 |     			 - Climb(): void                  |
 |     			 - Land(): void                   |
 +--------------------------------------------------------+
                                    |
               Objects of Class     |
                                   \|/
+-----------------+---+	+-----------+-------+   +-------------------+
|   Cessna Skyhawk    | |Gulfstream G150    |   |   Boeing 727       |
|      (Object)       | |    (Object)       |   |    (Object)        |
|  - TopSpeed, Range  | |  - TopSpeed, Range|   |  - TopSpeed, Range |
|  - TakeOff(),       | |  - TakeOff(),     |   |  - TakeOff(),      |
|  Climb(), Land()    | |  Climb(), Land()  |   |  Climb(), Land()   |
+---------------------| +-------------------+   +--------------------+