C :

#include<stdio.h>

int main()
{
	int n,i,j,t,k,a[10];
	while(scanf("%d",&n)!=EOF,n)
	{
		i=0;
		while(n)
		{
			a[i]=n%2;
			n/=2;
			i++;
		}
		t=0;
		for(j=0;j<i;j++)
		{
			if(a[j]==0)
				t++;
			else
				break;
		}
		k=1;
		for(j=0;j<t;j++)
			k*=2;
		printf("%d\n",k);
	}
	return 0;
}

C++ :

#include<stdio.h>

int main()
{
	int n,i,j,t,k,a[10];
	while(scanf("%d",&n)!=EOF,n)
	{
		i=0;
		while(n)
		{
			a[i]=n%2;
			n/=2;
			i++;
		}
		t=0;
		for(j=0;j<i;j++)
		{
			if(a[j]==0)
				t++;
			else
				break;
		}
		k=1;
		for(j=0;j<t;j++)
			k*=2;
		printf("%d\n",k);
	}
	return 0;
}

Java :

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        while(in.hasNextInt()){
        int n=in.nextInt();
        if(n==0) break;
        String cc="";
        while(n!=0) {
                  int yushu = n % 2;
                  cc=(char)(yushu+'0') +cc;
                  n = n/2;
                }  
         int a=cc.length()-1;
         int b=0,sum=0;
          while(cc.charAt(a)=='0'){
             b++;a--;
            }
           sum+=Math.pow(2,b);
            System.out.println(sum);
        }
    }
}