Question

Write a menu driven program to print area of rectangle, perimeter of rectangle, and diagonal of rectangle​

Answer 1

Answer:

import java.util.*;

public class Rectangle

{

public static void main(String args[ ])

{

Scanner in=new Scanner(System.in);

int ch,l,b;

System.out.println("Enter length:");

l=in.nextInt();

System.out.println("Enter breath:");

b=in.nextInt();

System.out.println("Enter 1 to calculate the area of rectangle");

System.out.println("Enter 2 to calculate the perimeter of rectangle");

System.out.println("Enter 3 to calculate the diagonal of rectangle");

System.out.println("Enter the operation you want to perform");

ch=in.nextInt();

switch(ch)

{

case 1:

int ar=0;

ar=l*b;

System.out.println("The area of rectangle="+ar);

break;

case 2:

int pr=0;

pr=2*(l+b);

System.out.println("The perimeter of rectangle="+pr);

break;

case 3:

double d=0.0;

d=Math.sqrt(l*l+b*b);

System.out.println("The diagonal of the rectangle="+d);

break;

default:

System.out.println("Invalid choice");

}

}