by Dinesh Thakur

 

import java.io.*;
	
	

class SumofNSequenceNumbers
{
            public static void main(String args[] )
            throws IOException
            {
                        BufferedReader k=new BufferedReader(new InputStreamReader
                                    (System.in));
                        String m;
                        int n,s=0,i;
                        System.out.print("Enter the Limit : ");
                        m=k.readLine();
                        n=Integer.parseInt(m);
                        for(i=1;i<=n;i++)
                        {
                                    s=s+i;
                        }
                        System.out.println("sum is "+s);
            }
}

Sum of first n Sequence Numbers