두 점 사이의 거리

# include <stdio.h>

# include <math.h>

typedef struct xyCoordinate

{

double x;

double y;

}xyCoordinate;

int main(void)

{

xyCoordinate coordinate[2] = { 0, };

// 

coordinate[0].x = 12.0;

coordinate[0].y = 14.0;

coordinate[1].x = 4.0;

coordinate[1].y = 5.0;

printf("%lf \n",

sqrt(pow(coordinate[1].x - coordinate[0].x, 2) +

    pow(coordinate[1].y - coordinate[0].y, 2)));

return 0;

}