Sunday, June 21, 2020

Write a program to input a number and check whether it is Prime Number or not? (Number divided by 1 or itself)

33)  Write a program to input a number and check whether it is Prime Number or not?   (Number divided by 1 or itself)

import java.util.*;
public class Prime_number
{
    public static void main(String args[ ])
    {
        Scanner sc = new Scanner (System.in);
        System.out.println("Enter a number");
        int a = sc.nextInt();
        int c = 0;
        for(int i=1;i<=a;i++)
        {
            if(a%i==0)
            c++;
        }
        if(c==2)
        {
            System.out.println("Entered number is a PRIME number");
        }
        else
        {
             System.out.println("Entered number is not a PRIME number");
        }
    }
}

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