By | 02.12.2016

# Draw a Circle using Mid-Point Algorithm

Write a C Program to Draw a Circle using Mid-Point Algorithm. Here’s simple Program to Draw a Circle using Mid-Point Algorithm in C Programming Language.

Below is the source code for C Program to Draw a Circle using Mid-Point Algorithm which is successfully compiled and run on Windows System to produce desired output as shown below :

## SOURCE CODE : :

```/*  C Program to Draw a Circle using Mid-Point Algorithm  */

#include<graphics.h>
#include<conio.h>
#include<stdio.h>
void plotpoints(int x, int y, int cx, int cy) {
putpixel(cx + x, cy + y, 4);
putpixel(cx - x, cy + y, 4);
putpixel(cx + x, cy - y, 4);
putpixel(cx - x, cy - y, 4);
putpixel(cx + y, cy + x, 4);
putpixel(cx - y, cy + x, 4);
putpixel(cx + y, cy - x, 4);
putpixel(cx - y, cy - x, 4);
}
void main() {
int cx, cy, x = 0, y, r, p;
int gd = DETECT, gm = DETECT;
clrscr();
printf("Enter the center \n");
scanf("%d%d", &cx, &cy);
scanf("%d", &r);
y = r;
p = 1 - r;
initgraph(&gd, &gm, "");
cleardevice();
while (x < y) {
plotpoints(x, y, cx, cy);
x++;
if (p < 0)
p += 2 * x + 1; else {
y--;
p += 2 * (x - y) + 1;
}
}
getch();
}```

Above is the source code for C Program to Draw a Circle using Mid-Point Algorithm which is successfully compiled and run on Windows System.The Output of the program is shown above .

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