Page 109 - Programming Microcontrollers in C

94 Chapter 2 Advanced C Topics

typedef struct
{
int x;
int y;
}Point;

typedef struct
{
Point center;
int radius;
}Circle;

typedef struct
{
Point p1;
Point p2;
}Rect;

Circle make_circle( Point ct, int rad )
{
Circle temp;
temp.center=ct;
temp.radius = rad;
return temp;
}

/* some useful macros */
#define min(a,b) (((a)<(b)) ? (a) : (b))
#define abs(a) ((a)<0 ? -(a) : (a))

/* function prototypes */
void draw_rectangle(Rect);
void draw_circle(Circle);

int main ( void )
{
Circle cir;
Point center;
Rect window = { {80,80},{600,400} };