package functions

import(
	"errors"
	"fmt"
)

func MyFibonacci(count int) (fibonaccivalue int, error error) {
	fibonaccivalue = 1
	error = nil
	var prev_fibonacci int = 0

	if count < 1 {
		return -1, errors.New(fmt.Sprintf("%d is not a positive integer.",count))
	}
	for i := 1; i < count; i++ {
		fibonaccivalue += prev_fibonacci
		prev_fibonacci = fibonaccivalue - prev_fibonacci
	}
	return
}