// ****************************************************************
//   PowersOf2.java
//
//   Print out as many powers of 2 as the user requests
//
// ****************************************************************
import java.io.*;

public class PowersOf2
{
    public static void main(String[] args) throws IOException
    {
        BufferedReader keyboard =
                       new BufferedReader(new InputStreamReader(System.in));

        int numPowersOf2;        //How many powers of 2 to compute
        int nextPowerOf2 = 1;    //Current power of  2
        int exponent=0;            //Exponent for current power of 2 -- this
                                //also serves as a counter for the loop

        System.out.println("How many powers of 2 would you like printed?");
        numPowersOf2 = Integer.parseInt(keyboard.readLine());

        //print a message saying how many powers of 2 will be printed

        //initialize exponent -- the first thing printed is 2 to the what?

        while (    )
        {
        //print out current power of 2

        //find next power of 2 -- how do you get this from the last one?

        //increment exponent

        }
    }
}