Question:-
William planned to choose a four-digit lucky number for his car. His lucky numbers are 3,5 and 7. Help him find the number, whose sum is divisible by 3 or 5 or 7.
Provide a valid car number, Fails to provide a valid input then display that number is not a valid car number.
Note : The input other than 4 digit positive number[includes negative and 0] is considered as invalid.
Refer the samples, to read and display the data.
Sample Input 1:
Enter the car no:1234
Sample Output 1:
Lucky Number
Sample Input 2:
Enter the car no:1214
Sample Output 2:
Sorry it’s not my lucky number
Sample Input 3:
Enter the car no:14
Sample Output 3:
14 is not a valid car number
Code :-
import java.util.*; class LuckyNum{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int n,m,sum = 0; System.out.println("Enter the car no:"); m = sc.nextInt(); if(m<1000){ System.out.println(m+" is not a valid car number"); } else{ while(m>0){ n=m%10; sum=sum+n; m=m/10; } if(sum%3==0 || sum%5==0 || sum%7==0){ System.out.println("Lucky Number"); } else{ System.out.println("Sorry its not my lucky number"); } } } }