1015 distance between two points.c

#include<stdio.h>
#include<math.h>
int main()
{
    double x1, y1, x2, y2, distance;
    scanf("%lf %lf", &x1, &y1);
    scanf("%lf %lf", &x2, &y2);
    distance = sqrt((pow((x2 - x1), 2)) + pow((y2 - y1),2));
    printf("%.4lf\n", distance);
    return 0;
}