hdu-1196-Lowest Bit

#include<stdio.h>

int a[10]={1,2,4,8,16,32,64,128,256,512};

int b[100];

int main()

{
int n;
while(scanf("%d",&n)&&n)
{
int i=0,t=0;
while(n)
{
b[i++]=n%2;
n=n/2;
}
for(i=0;;i++)
{
if(b[i]!=0)
{
t+=a[i];
break;
}
}
printf("%d\n",t);
}
return 0;

}