#include <iostream.h>long FibIter(long n){  if(n<=1) return n;    else{      int Current;      long twoback=1,oneback=0;      for(int i=2;i<=n;i++){	Current=twoback+oneback;	oneback=twoback;	twoback=Current;	}      return Current;      }    } void recfunc(int A[],int n){   if(n>=0){     cout<<A[n]<<"  ";     n--;     recfunc(A,n);     }   }  void iterfunc(int A[],int n){    while(n>=0){      cout<<"value "<<A[n]<<endl;      n--;      }    }void main(){  long n=9;  cout<<FibIter(n)<<endl;  static  int a[10]={0};  recfunc(a,9);  cout<<endl;  iterfunc(a,9);  }