[JAVA] [ICSE 2005 Answer 6] Calculating Area By Function Overloading

Question:

ICSE 2005 Question 6

Write a program using a function called area() to compute the area of a:

(i)      Circle(II * r)where II = 3.14

(ii)     Square(side*side)

(iii)    Rectange(length * breadth)

Display the menu to output the area as per user's choice

Source Code:

import java.util.*;

public class ICSE2005_6

{

    public static void main(String args[])throws Exception

    {

        Scanner read=new Scanner(System.in);

        System.out.print("What do you want to find?\nEnter:\n1 for area of circle\n2 for area of square\n3 for area of rectange\nEnter your choice:");

        int choice=read.nextInt();

        double a;

        switch(choice)

        {

            case 1:

            System.out.print("Enter the length of radius of the circle:");

            double r=read.nextDouble();

            a=areac(r);

            System.out.println("Area of the circle is "+a+".");

            break;

            case 2:

            System.out.print("Enter the length of side of the square:");

            double s=read.nextDouble();

            a=areas(s);

            System.out.println("Area of the square is "+a+".");

            break;

            case 3:

            System.out.print("Enter the length of first side of the rectange:");

            double l=read.nextDouble();

            System.out.print("Enter the length of second side of the rectange:");

            double b=read.nextDouble();

            a=arear(l, b);

            System.out.println("Area of the rectangle is "+a+".");

            break;

            default:

            System.out.println("Invalid option entered!:(");

        }

    }

    private static double areac(double r)

    {

        return ((3.14)*r*r);

    }

    private static double areas(double s)

    {

        return (s*s);

    }

    private static double arear(double l, double b)

    {

        return (l*b);

    }

}

Result 1:

OUTPUT:

What do you want to find?

Enter:

1 for area of circle

2 for area of square

3 for area of rectange

Enter your choice:1

Enter the length of radius of the circle:4.67

Area of the circle is 68.479946.

Result 2:

OUTPUT:

What do you want to find?

Enter:

1 for area of circle

2 for area of square

3 for area of rectange

Enter your choice:2

Enter the length of side of the square:98

Area of the square is 9604.0.

Result 3:

OUTPUT:

What do you want to find?

Enter:

1 for area of circle

2 for area of square

3 for area of rectange

Enter your choice:3

Enter the length of first side of the rectange:5.4

Enter the length of second side of the rectange:6.87

Area of the rectangle is 37.098000000000006.

Result 4:

OUTPUT:

What do you want to find?

Enter:

1 for area of circle

2 for area of square

3 for area of rectange

Enter your choice:4

Invalid option entered!:(