Question

write menu driven program to check whether the given program is duck or neon
plz answer correctly I need it urgently trust upon u ​

Answer 1

Answer:

import java.util.Scanner;

public class duckneon

{

public static void main(String args[])

{

Scanner sc = new Scanner(System.in);

System.out.println("1. Duck number");

System.out.println("2.Neon number");

System.out.println("Enter your choice");

int n= sc.nextInt();

switch(n)

{

case 1:

{

System.out.print("Input a number : ");

String nstr = sc.nextLine();

int l = nstr.length();

int ctr = 0;

char chr;

for(int i=1;i<l;i++)

{

chr = nstr.charAt(i);

if(chr=='0')

ctr++;

}

char f = nstr.charAt(0);

if(ctr>0 && f!='0')

System.out.println("Duck number");

else

System.out.println("Not a duck number");

}

case 2:

{

int z,square,sum=0;

//you have to enter number here.

System.out.print("Enter the number: " );

z=sc.nextInt();

//calculate square.

square=z*z;

while(square>0)

{

sum=sum+square%10;

square=square/10;

}

//condition for checking sum is equal or not.

if(sum==z)

System.out.println("Its a Neon number.");

else

System.out.println("Its not a Neon number.");

}

default:

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

}

}

}

Explanation:

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