#include<stdio.h>
int fibonacci(int y)
void main()
{
int n;
printf("enter a number :n");
scanf("%d",&n);
int x= fibonacci(n);
printf("%d",x);
}
int fibonacci(int y)
{
int first=0;
int second=1;
if(n==1)
{
return first;
}
else if(n==2)
{
return second;
}
else
{
return fibonacci(n-1)+fibonacci(n-2);
}