//finonacci series
#include<stdio.h>
#include<conio.h>
void fibo(long int*);
void main()
{
clrscr();
long int n;
printf("\n Enter a positive number:");
scanf("%ld",&n);
if(n<0)
do
{
	printf("\n Enter a positive number:");
	scanf("%ld",&n);
	if(n>0)
	fibo(&n);


}while(n<0);
else
fibo(&n);
getche();
}
void fibo(long int* n)
{


	long int a=1,b=1,c;
	printf("\n The fibonacci series is:");
	printf("%ld %ld",a,b);
	for(int i=3;i<=*n;i++)
	{
	c=a+b;
	a=b;
	b=c;
	printf(" %ld",c);;
	}
}