Question

Question 4.4: Write an overloaded function of function area with 3 (float) parameters. This function should calculate and print out the product of the 3 parameters. Question 4.4: Write the main function to test question 4.1, 4.2, 4.3, 4.4. Your main function should ask if the user want to calculate the area of a rectangle or a circle or a triangle then print out the result accordingly. (Use switch structure). For example: Please enter (r) for rectangle, (t) for triangle, (c) for circle: r Please enter the width: Please enter the length: The area of the rectangle is:

Answer 1

4.3]

void area(float a,float b,float c)

{

float ar=a*b*c; //calculates area of triangle and store it in ar

System.out.println("The area of triangle is:"+ar); // prints out area of triangle

}

4.4]

import java.io.*;

import java.util.Scanner;

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

{

Scanner sc = new Scanner(System.in);

System.out.println("please enter (r) for rectangle , (t) for triangle , (c) for circle ");

char s=sc.next();

switch(s)

{

case 'r':

System.out.println("enter the length of the rectangle:");

double l=sc.nextDouble();

System.out.println("enter the breadth of the rectangle:");

double b=sc.nextDouble();

sc.area(l,b);

break;

case 't':

System.out.println("enter sides of a triangle");

float a=sc.nextFloat();

float b=sc.nextFloat();

float c=sc.nextFloat();

sc.area(a,b,c);

break;

case 'c':

System.out.println("enter radius of circle");

double r=sc.nextDouble();

sc.area(r);

break;

}

}