#include <iostream.h>
void main(){
 int f0,f1,f,n;
 f0=0;
 f1=1;
  cout<<"Fibbonacci Series :";
  cout<<f0;
  cout<<f1;
  for(n=2;n<20;n++){
    f=f0+f1;
    cout<<f;
    f0=f1;
    f1=f;
    }
  }  
