please show how you calculated perpendicular point. Thank you!

Your code must use the following structure struct point struct t double xcoor; double ycoor; char label [25]; typedef struct point struct Point; the following functions must be created Point getPoint; I read in a point from the user (stdin) double distance(Point pt1, Point pt2); I/ return the distance between pt1 and pt2 double slope (Point pt1, Point pt2); /* calculate the slope of the line starting at pt1 and going to pt2/ void perpPoint (Point pt1, Point pt2, Point pt3); /t calculate pt3 such that a line from pti to pt3 is perpendicular to the line from pti to pt2, and the distance between pt1 and pt2 is the same as the distance between pt1 and pt3 /