Rotating Wheel

Program : Rotating Wheel

#include <graphics.h>

#include <stdlib.h>

#include <stdio.h> //header file inclusion

#include <conio.h>

#include<math.h>

int main(void) //main function

{

int gdriver = DETECT, gmode, errorcode,i,x1,y1;

initgraph(&gdriver, &gmode, "D:\\TC\\"); //initializing graphics window

errorcode = graphresult();

if (errorcode != grOk) //an error occurred

{

printf("Graphics error: %s\n", grapherrormsg(errorcode));

printf("Press any key to halt:"); //error recovery

getch();

exit(1); //return with error code

}

printf("\n\nenter the centre coordinates of the circle");

scanf("%d%d",&x1,&y1); //Inputting circle center

for(i=0;i<360;i++)

{

setcolor(RED);

line(x1,y1,x1+100*cos(3.14*i/180),y1+100*sin(3.14*i/180)); //draw lines for wheel

line(x1,y1,x1-100*cos(3.14*i/180),y1-100*sin(3.14*i/180)); //draw lines for wheel

circle(x1,y1,100); //draw circle

delay(20);

setcolor(0);

line(x1,y1,x1+100*cos(3.14*i/180),y1+100*sin(3.14*i/180)); //draw lines for wheel

line(x1,y1,x1-100*cos(3.14*i/180),y1-100*sin(3.14*i/180)); //draw lines for wheel

circle(x1,y1,100); //draw circle

delay(20);

x1++; //translate circle

y1++;

}

closegraph();

return 0; //terminate

}