Classes.cpp

#include<bits/stdc++.h>
using namespace std;

namespace example1 {
    class triangle
    {
    private:
        float base;
        float height;

    public:
        // SET function
        void setBase_height(float b, float h)
        {
            base = b;
            height = h;
        }

        // GET area
        float getArea()
        {
            return 0.5*base*height;
        }

        // print function
        void print()
        {
            cout << "Base = " << base << endl <<
                    "Height = " << height << endl <<
                    "Area = " << getArea() << endl;
        }
    };

    void run()
    {
        triangle t1;
        t1.setBase_height(10, 20);
        t1.getArea();
        cout << t1.getArea() << endl;  // 100
        t1.print();  // 10 20 100
    }
}

namespace example2 {
    class car
    {
    // Private scope
    private:
        // Member data/values
        char name[15];
        char color[10];
        int maxSpeed;
        int model;

    // Public scope
    public:
        // Member functions --> Functions defined in the class in the public scope
        // SET FUNCTIONS
        // Function to set a name for the cat
        void setName(char n[])
        {
            strcpy_s(name, n);
        }
        // function to set a color
        void setColor(char c[])
        {
            strcpy_s(color, c);
        }
        // function to set a maxSpeed
        void setMaxspeed(int m)
        {
            maxSpeed = m;
        }
        //function to set the model
        void setModel(int m)
        {
            model = m;
        }

        // GET FUNCTIONS
        char* getName()
        {
            return name;
        }
        char* getColor()
        {
            return color;
        }
        int getMaxspeed()
        {
            return maxSpeed;
        }
        int getModel()
        {
            return model;
        }

        // Function to print the attributes values
        void print()
        {
            /*
            cout << "Car name: " << name << "\n" <<
                    "Car color: " << color << "\n" <<
                    "Car max speed = " << maxSpeed << "\n"
                    "Car model: " << model << "\n";
            */  //OR
            cout << "Car name: " << getName() << "\n" <<
                    "Car color: " << getColor() << "\n" <<
                    "Car max speed = " << getMaxspeed() << "\n"
                    "Car model: " << getModel() << "\n";
        }

    };

    // Non-member function
    void p()
    {
        cout << "Non member function" << endl;
    }

    void run()
    {
        p();
        car x;
        x.setName("BMW");
        x.setColor("Blue");
        x.setMaxspeed(250);
        x.setModel(2023);
        x.print();
    }
}