Question

Write a java program to input a number n and find the sum of prime numbers between 1 and n.​

Answer 1

import java.io.*;

import java.util.*;

class sum

{

public static void main (String args[ ])

{

int n,i=1, s=0;

Scanner sc=new Scanner (System.in);

System.out.println("Enter the number n:");

n=sc.nextInt();

while(i<=n)

{

s=s+i;

I=i+2;

}

System.out.println("The required sum is:"+s);

}

}