C Program to Draw Traffic Signal using Graphics

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
void car(int x);
int main()
{
int gd=DETECT,gn;
int x;
char ch;
initgraph(&gd,&gn,"C:\\TC\\BGI");
x=getmaxx();
ch='r';
//post
while(ch!='e')
{
cleardevice();
rectangle(50,150,100,50);
line(75,150,75,450);
line(85,150,85,450);
circle(75,75,10);
circle(75,100,10);
circle(75,125,10);
car(x);
switch(ch)
{
case 'r':setfillstyle(SOLID_FILL,RED);
circle(75,75,10);
floodfill(75,75,WHITE);
circle(75,100,10);
circle(75,125,10);
break;
case 'g':setfillstyle(SOLID_FILL,GREEN);
circle(75,75,10);
circle(75,100,10);
floodfill(75,100,WHITE);
circle(75,125,10);
while(!kbhit())
{
x--;
if(x<290)
{
x=getmaxx();
}
car(x);
circle(75,75,10);
circle(75,100,10);
floodfill(75,100,WHITE);
circle(75,125,10);
delay(50);
}
break;
case 'y':setfillstyle(SOLID_FILL,YELLOW);
circle(75,75,10);
circle(75,100,10);
circle(75,125,10);
floodfill(75,125,WHITE);
break;
default: printf("Thank you");
break;
}
delay(50);
ch=getch();
}
getch();
return 0;
}
void car(int x)
{
int y=350,r=25;
cleardevice();
line(x-249,y,x-219,y);
sector(x-169,y,0,180,50,50);
line(x-119,y,x-89,y);
circle(x-219,y+25,r);
circle(x-119,y+25,r);
}