Question

write a program in Java to print the given number is prime or not​

Answer 1

Question:-

• To check if the given number is a prime number or not.

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Code:-

package Coder;

import java.util.*;

public class PrimeCheck {

public static void main(String[] args) {

Scanner sc=new Scanner (System.in);

System.out.println("Enter a number");

int n=sc.nextInt();

int c=0;

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

{

if(n%i==0)

c++;

}

if(c==2)

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

else

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

}

}

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Variable Description:-

1. n:- to accept the number from the user
2. i:- loop variable
3. c:- count variable to count the no. of factors of a number

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•Output Attached