Practical 2 OOP

 PRACTICAL – 2.1

Write  a  program  to  find  the  largest  of  three  integers  using  a  swap function.  The  function accepts integer arguments by reference

#include <iostream>

using namespace std;

void swap(int *num1, int *num2)

{

    int temp = *num1;

    *num1 = *num2;

    *num2 = temp;

}

void max(int x, int y, int z)

{

    int max_num;

    if (x > y && x > z)

    {

        swap(&y, &z);

        swap(&x, &y);

    }

    else if (y > z)

    {

        swap(&x, &y);

        swap(&y, &z);

    }

    else

    {

        swap(&z, &x);

    }

    cout << "Number in decending order : " << x << y << z;

}

int main()

{

    max(1, 5, 3);

    return 0;

}

PRACTICAL – 2.2

Design classes named Triangle, Square, and Circle. Make the different function in each class to find areas of particular shape

#include <iostream>

using namespace std;

class Triangle

{

    int bse, hig;

public:

    Triangle(int num1, int num2) : bse(num1), hig(num2)

    {

        cout << "Base and Height saved sucessfully : " << bse << " " << hig << endl;

    }

    double area()

    {

        double area = (bse * hig) / 2;

        return area;

    }

};

class Circle

{

    int rad;

public:

    Circle(int a) : rad(a)

    {

        cout << "Radius saved sucessfully : " << rad << endl;

    }

    double area()

    {

        double area_circle = (3.14) * rad * rad;

        return area_circle;

    }

};

class Squre

{

    int len;

public:

    Squre(int a) : len(a)

    {

        cout << "Length saved sucessfully : " << length << endl;

    }

    int area()

    {

        int are_squ = len * len;

        return are_squ;

    }

};

int main()

{

    Triangle x(2, 4);

    cout << "Area of Triangle " << x.area() << endl;

    Circle y(4);

    cout << "Area of Circle " << y.area() << endl;

    Squre z(9);

    cout << "Area of Squre " << z.area() << endl;

    return 0;

}

PRACTICAL – 2.3 Create a class with string pointer as data member and member functions:

#include <iostream>

using namespace std;

class abc

{

    char *ptr, b[20];

public:

    void getdata()

    {

        cout << "enter any string:";

        cin >> b;

    }

    void display()

    {

        ptr = b;

        cout << "you entered:";

        while (*ptr != '\0')

        {

            cout << *ptr;

            ++ptr;

        }

    }

} obj;

int main()

{

    obj.getdata();

    obj.display();

    return 0;

}