Header file:
graphics.h
Synopsis:
void circle (int x, int y, int rad);
(x, y) - center of the circle
rad - radius of the circle
Description:
circle() draws a circle with (x, y) as center and rad as radius.
circle function in c graphics
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <dos.h>
int main(void) {
/* request auto detection */
int graphicDriver = DETECT, graphicMode;
int err, i, j = 1, x, y, radius = 200;
/* initialize graphics and 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;
for (i = radius; i > 0; i = i - 5) {
setcolor(j);
setfillstyle(SOLID_FILL, j);
/* draw the circle */
circle(x, y, i);
floodfill(x, y, j);
if (j < 15) {
j = j + 1;
} else {
j = 1;
}
/* sleep for 250 milliseconds */
delay(250);
}
/* clean up */
getch();
closegraph();
return 0;
}
Output: (circle built-in function in c graphics.h)
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