Ch6Ex1a

package ch6ex1a;
import java.util.Scanner;

public class Ch6Ex1a
{
    public static void main(String[] args)
    {
        Scanner sc=new Scanner(System.in);
        System.out.print("Enter a number: ");
        int num=sc.nextInt();
        boolean isPrime=true;
        for(int c=num-1;c>1;c--)if(num%c==0)isPrime=false;
        if(isPrime==true)System.out.println(num+" is prime.");
        else System.out.println(num+" is not prime.");
    }
}