lab 10.3

#include <stdio.h>
#include <math.h>

void nierek(unsigned int);

int main()
{
    unsigned int n, i;
    printf("Podaj n: ");
    scanf("%u", &n);
    nierek(n);

}
void nierek(unsigned int n)
{
    double l1, l2, x1, x2;

    l1 = (1+sqrt(5))/2;
    l2 = (1-sqrt(5))/2;
    x1 = pow(l1, n);
    x2 = pow(l2, n);
    printf("%lf", (x1-x2)/sqrt(5));
}