/* distance.c */
/* example of struct */
#include <stdio.h>
#include <math.h>

typedef struct vector2 {
	float x;
	float y;
} Vector2;

main()
{
	Vector2 p1,p2;
	float distance;

	p1.x = 0.0; p1.y = 1.0;
	p2.x = 1.0; p2.y = 0.0;

	distance = sqrt(pow(p2.x-p1.x, 2.)+pow(p2.y-p1.y, 2.));
	printf("Distance = %f\n",distance);
}