#include <stdio.h>
#include <math.h>
#pragma warning(disable:4996)

#define PI 3.14

typedef struct point
{
    int xpos;
    int ypos;   
} Point;

typedef struct circle
{
    Point cen;
    int rad;   
} Circle;

Circle GetCircleInfo(void)
{
    Circle Cen, Rad;
    printf("Input focus and radius of circle: ");
    scanf("%d %d %d", &Cen.cen.xpos, &Cen.cen.ypos, &Rad.rad);
    return Cen, Rad;    
}

void CalcCircle(Circle *c1, Circle *c2)
{
    double distance;
    double area1, area2;

    distance = sqrt((double)((c1->cen.xpos - c2->cen.xpos) * (c1->cen.xpos - c2->cen.xpos) + (c1->cen.ypos - c2->cen.ypos) * (c1->cen.ypos - c2->cen.ypos)));
    area1 = (double)( (c1->rad) * (c1->rad) * PI );
    area2 = (double)( (c2->rad) * (c2->rad) * PI );

    printf("Distance of two point is %g \n", distance);
    printf("Area of C1 is %g \n", area1);
    printf("Area of C2 is %g \n", area2);   
}

int main(void)
{
    Circle C1 = GetCircleInfo();
    Circle C2 = GetCircleInfo();

    CalcCircle(&C1, &C2);

    return 0;
}