To write a program for midpoint circle drawing.


Step 1: Start.

Step 2: Initialize the graphics header files and functions.

Step 3: Declare the required variables and functions.

Step 4: Get the co-ordinates and radius of the circle.

Step 5: Draw the circle using the algorithm.

Step 6: Display the output.

Step 7: Stop.


 #include <stdio.h>
#include <conio.h>
#include <math.h>
#include <graphics.h>
void main()
{ int gd=DETECT,gm; int xcenter,ycenter,radius; int p,x,y; initgraph(&gd,&gm,"c:turboc3bgi"); x=0; printf("n Enter The Radius Value:"); scanf("%d",&radius); y=radius; printf("n Enter The xcenter and ycenter Values: "); scanf("%d%d",&xcenter,&ycenter); plotpoints(xcenter,ycenter,x,y); p=1-radius; while(x<y) { if(p<0) x=x+1; else { x=x+1; y=y-1; } if(p<0) p=p+2*x+1; else p=p+2*(x-y)+1; plotpoints(xcenter,ycenter,x,y); } getch();
int plotpoints(int xcenter,int ycenter,int x,int y)
{ putpixel(xcenter+x,ycenter+y,1); putpixel(xcenter-x,ycenter+y,1); putpixel(xcenter+x,ycenter-y,1); putpixel(xcenter-x,ycenter-y,1); putpixel(xcenter+y,ycenter+x,1); putpixel(xcenter-y,ycenter+x,1); putpixel(xcenter+y,ycenter-x,1); putpixel(xcenter-y,ycenter-x,1);



                 Thus the program for midpoint circle drawing is written and executed successfully.

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