Fibonacci numbers.

package pan;

public class pan1{

public static void main(String[] args)
{
double a=0,b=1,c=0,d=0,e=0,f=0;
System.out.println(a);
System.out.println(b);
for(int i=0;i<=50;i++)
{ c=a+b;
System.out.print(c);
e=c/b;
System.out.println("公比是"+e);
a=c;
d=b+c;
System.out.print(d);
f=d/c;
System.out.println("公比是"+f);
b=d; } } }