Header file:
graphics.h
Synopsis:
void ellipse (int x, int y, int stangle, int endangle,
int xradius, int yradius);
(x, y) - center of the ellipse
stangle - starting angle
endangle - ending angle
xradius - radius of ellipse at x-axis
yradius - radius of ellipse at y-axis
Description:
ellipse() draws an ellipse with given center(x, y), radii and angle.
ellipse function in c graphics
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
int main(void) {
/* request auto detection */
int graphicDriver = DETECT, graphicMode;
int err, x, y, i, startAngle = 0, endAngle = 360;
int radX = 280, radY = 230;
/* initialize graphics, local variables */
initgraph(&graphicDriver, &graphicMode,
"C:/TURBOC3/BGI");
/* read result of initialization */
err = graphresult();
if (err != grOk) {
/* an error occurred */
printf("Graphic Error: %s\n",
grapherrormsg(err));
return 0;
}
/* mid position in x and y-axis */
x = getmaxx() / 2;
y = getmaxy() / 2;
setcolor(getmaxcolor());
for (i = 0; i < 9; i++) {
/* draw ellipse */
ellipse(x, y, startAngle, endAngle, radX, radY);
radX = radX - 20;
radY = radY - 20;
}
setcolor(9);
setfillstyle(SOLID_FILL, 10);
circle(x, y, 30);
floodfill(x, y, 9);
/* clean up */
getch();
closegraph();
return 0;
}
Output: (ellipse built-in function in c graphics.h)
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