c program for Fibonacci series

#include<iostream.h>
#include<conio.h>
int fibo(int,int=1,int=0,int=1);
int fibo(int m,int n,int f1,int f2)
{
  int s=0;
  if(n>=m)
  return 1;
  s=f1+f2;
  cout<<"\t"<<s;
  s+=fibo(m,++n,f2,s);
  return s;
}
void main()
{
  int i;
  clrscr();
  cout<<"Sum of Fibo..Series..";
  cout<<"\nEnter no.";
  cin>>i;
  cout<<"\n1";
  i=fibo(i);
  cout<<"\nSum of First Fibo..no..is\n";
  cout<<i;
  getch();
}