Question 5

import java.util.Scanner;
class Project05
{
public static void main(String[]args)
{
Scanner sc=new Scanner(System.in);
System.out.println("Enter a number");
long n=sc.nextLong();
int c=10,s=0,d;
while(n!=0)
{
d=(int)n%10;
s+=d*c;
c--;
n/=10;
}
if(c!=0)
System.out.println("Not a 10 digit number");
else if(s%11==0)
System.out.println("Yes ISBN number");
else
System.out.println("Not ISBN number");
}
}