i hav car racing program in c++ and i wish to convert this program in c what i do?

prigram is this......

#include <iostream.h>
#include <dos.h>
#include <graphics.h>
#include <conio.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <ctype.h>

class car
{
private:
	int x1,y1,x2,y2,col,col2,col3;
public:
	car():x1(200),y1(300),x2(270),y2(200),col(4)
	{}
	car(int a,int b,int c,int d,int e,int f,int
g):x1(a),y1(b),x2(c),y2(d),col(e),col2(f),col3(g)
	{}
	void get(int a,int b,int c,int d,int e,int f,int g)
	{
		x1=a;
		y1=b;
		x2=c;
		y2=d;
		col=e;
		col2=f;
		col3=g;
		if (x1<=180)
		{
			sound(1000);
			x1=200;
			x2=270;
		}
		if (x2>=430)
		{
			sound(1000);
			x1=340;
			x2=410;
		}
	}
	void draw()
	{
		setcolor(col);
		setfillstyle(1,col);
		rectangle(x1,y1,x2,y2);          //car body
		floodfill(x1+10,y2+10,col);
		setcolor(col2);                  //windows
		setfillstyle(2,col2);
		rectangle(x1+10,y1-70,x2-10,y2+10);
		floodfill(x1+15,y2+15,col2);
		rectangle(x1+10,y1-10,x2-10,y2+70);
		floodfill(x1+15,y1-15,col2);
		setcolor(col3);                  //wheels
		setfillstyle(1,col3);
		rectangle(x1-10,y2+5,x1,y2+20);
		floodfill(x1-4,y2+12,col3);
		rectangle(x2,y2+5,x2+10,y2+20);
		floodfill(x2+4,y2+12,col3);
		rectangle(x1-15+1,y1-25,x1,y1-5);
		floodfill(x1-10,y1-20,col3);
		rectangle(x2,y1-25,x2+15,y1-5);
		floodfill(x2+4,y1-20,col3);
	}
	void collide(int col)
	{
		setcolor(col);
		setfillstyle(1,col);
		line(x1-5,y2-3,x1,y2);
		line(x1-5,y2-5,x1,y2-5);
		line(x1-5,y2-3,x1-5,y2-5);
		line(x1,y2-5,x1+5,y2-3);
		line(x1+5,y2-3,x1+10,y2-15);
		line(x1+10,y2-15,x1+20,y2-3);
		line(x1+20,y2-3,x1+30,y2-10);
		line(x1+30,y2-10,x1+35,y2-3);
		line(x1+35,y2-3,x1+45,y2-12);
		line(x1+45,y2-12,x1+55,y2-3);
		line(x1+55,y2-3,x1+60,y2-10);
		line(x1+60,y2-10,x1+70,y2-3);
		line(x1+70,y2-3,x1+74,y2-8);
		line(x1+74,y2-8,x1+70,y2);
		line(x1,y2,x1+70,y2);
		floodfill(x1+30,y2-1,col);
		line(x1-5,y1+3,x1,y1);
		line(x1-5,y1+5,x1,y1+5);
		line(x1-5,y1+3,x1-5,y1+5);
		line(x1,y1+5,x1+5,y1+3);
		line(x1+5,y1+3,x1+10,y1+15);
		line(x1+10,y1+15,x1+20,y1+3);
		line(x1+20,y1+3,x1+30,y1+10);
		line(x1+30,y1+10,x1+35,y1+3);
		line(x1+35,y1+3,x1+45,y1+12);
		line(x1+45,y1+12,x1+55,y1+3);
		line(x1+55,y1+3,x1+60,y1+10);
		line(x1+60,y1+10,x1+70,y1+3);
		line(x1+70,y1+3,x1+74,y1+8);
		line(x1+74,y1+8,x1+70,y1);
		line(x1,y1,x1+70,y1);
		floodfill(x1+30,y1+1,col);
	}
};


class obstacle
{
private:
	int x,y,col;
public:
	obstacle():x(0),y(0),col(0)
	{}
	obstacle(int a,int b,int c):x(a),y(b),col(c)
	{}
	void get(int a,int b,int c)
	{
		x=a;
		y=b;
		col=c;
	}
	void draw()
	{
		setcolor(col);
		setfillstyle(1,col);
		circle(x,y,20);
		floodfill(x,y,col);
	}
};


class timer
{
private:
	int sec,min,ms,flag;
public:
	timer():min(0),sec(0),ms(0),flag(0)
	{}
	timer(int a,int b,int c,int d):min(a),sec(b),ms(c),flag(d)
	{}
	void start()
	{
		min=sec=ms=flag=0;
	}
	void get()
	{
		settextstyle(1,0,1);
		char* minn;
		if (min>9)
		{
			int minnn=min/10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(20,100,minn);
			setcolor(0);
			outtextxy(20,100,minn);
		}
		if (min>9)
		{
			int minnn=min%10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(30,100,minn);
			setcolor(0);
			outtextxy(30,100,minn);
		}
		if (min<=9)
		{
			int minnn=min;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(20,100,minn);
			setcolor(0);
			outtextxy(20,100,minn);
		}
		setcolor(15);
		outtextxy(40,100,":");
		if (sec>9)
		{
			int minnn=sec/10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(50,100,minn);
			setcolor(0);
			outtextxy(50,100,minn);
		}
		if (sec>9)
		{
			int minnn=sec%10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(60,100,minn);
			setcolor(0);
			outtextxy(60,100,minn);
		}
		if (sec<=9)
		{
			int minnn=sec;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(50,100,minn);
			setcolor(0);
			outtextxy(50,100,minn);
		}
		setcolor(15);
		outtextxy(70,100,":");
		if (ms>9)
		{
			int minnn=ms/10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(80,100,minn);
			setcolor(0);
			outtextxy(80,100,minn);
		}
		if (ms>9)
		{
			int minnn=ms%10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(90,100,minn);
			setcolor(0);
			outtextxy(90,100,minn);
		}
		if (ms<=9)
		{
			int minnn=ms;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(80,100,minn);
			setcolor(0);
			outtextxy(80,100,minn);
		}
	}
	void time()
	{
		ms++;
		if (ms==100)
		{
			ms=0;
			sec++;
		}
		if (sec==60)
		{
			sec=0;
			min++;
		}
	}
	int minutes()
	{
		return min;
	}
	void timego()
	{
		ms=0;
		sec+=30;
		if (sec>60)
		{
			sec=0;
			min++;
		}
	}
};
void grass()
{
	setcolor(10);
	setfillstyle(1,10);
	rectangle(0,0,180,400);
	floodfill(10,100,10);
	rectangle(430,0,600,400);
	floodfill(480,100,10);
	setcolor(5);
	settextstyle(8,0,3);
	outtextxy(440,50,"RACE CRAZE");
	setcolor(0);
	setfillstyle(1,0);
	settextstyle(7,0,2);
	outtextxy(20,60,"TIMER");
	rectangle(20,100,150,130);
	floodfill(60,120,0);
	settextstyle(7,0,2);
	outtextxy(20,260,"MILES");
	rectangle(20,300,150,330);
	floodfill(60,320,0);
}
void track(int n,int coll)
{
	setcolor(coll);
	setfillstyle(1,coll);
	rectangle(300,n,310,50+n);
	floodfill(302,10+n,coll);
	rectangle(300,100+n,310,150+n);
	floodfill(302,110+n,coll);
	rectangle(300,200+n,310,250+n);
	floodfill(302,210+n,coll);
	rectangle(300,300+n,310,350+n);
	floodfill(302,310+n,coll);
	rectangle(300,400+n,310,450+n);
	floodfill(302,410+n,coll);
	rectangle(300,500+n,310,550+n);
	floodfill(302,510+n,coll);
	rectangle(300,600+n,310,650+n);
	floodfill(302,610+n,coll);
	rectangle(300,700+n,310,750+n);
	floodfill(302,710+n,coll);
}
void main()
{
	int driver,mode;
	driver=EGA;
	mode=EGAHI;
	initgraph(&driver,&mode,"c:\\tc\\bgi");
	car c,c1;
	obstacle o;
	timer T;
	int i,j=200,k=200;
	int t=-200,flg=0;
	time_t tt,ttt;
	c.get(k,j+100,k+70,j,4,3,8);
	c.draw();
	grass();
	track(t,15);
	randomize();
	int r=0,r1,l=50;
	int miles=0,mil=0;
	int stage=10;
	getch();
	do
	{
		T.get();
		i=0;
		if (kbhit())
			i=getch();
		T.time();
		char* minn;
		settextstyle(1,0,1);
		if (miles>99)
		{
			int minnn=miles/100;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(30,310,minn);
			setcolor(0);
			outtextxy(30,310,minn);
		}
		if (miles>99)
		{
			int minnn=miles%100;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(40,310,minn);
			setcolor(0);
			outtextxy(40,310,minn);
		}
		if (miles>9)
		{
			int minnn=miles/10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(40,310,minn);
			setcolor(0);
			outtextxy(40,310,minn);
		}
		if (miles>9)
		{
			int minnn=miles%10;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(50,310,minn);
			setcolor(0);
			outtextxy(50,310,minn);
		}
		if (miles<=9)
		{
			int minnn=miles;
			if (minnn==0)
				minn="0";
			if (minnn==1)
				minn="1";
			if (minnn==2)
				minn="2";
			if (minnn==3)
				minn="3";
			if (minnn==4)
				minn="4";
			if (minnn==5)
				minn="5";
			if (minnn==6)
				minn="6";
			if (minnn==7)
				minn="7";
			if (minnn==8)
				minn="8";
			if (minnn==9)
				minn="9";
			setcolor(15);
			outtextxy(40,310,minn);
			setcolor(0);
			outtextxy(40,310,minn);
		}
		if (flg==0)
		{
			randomize();
			srand((unsigned) time(&ttt));
			r=rand()%3;
			if (r==2)
			{
				randomize();
				r1=random(10)%2;
				l=100;

      
(r1==0)?c1.get(200,l+stage,270,l+stage-100,5,6,7):
c1.get(335,l+stage,405,l+stage-100,5,6,7);

				c1.draw();
				flg=2;
			}
		}
		sound(miles+100);
		if (i==75)
		{
			c.get(k,j+100,k+70,j,0,0,0);
			c.draw();
			k=200;
			c.get(k,j+100,k+70,j,4,3,8);
			if (flg==1)
			{
				c1.collide(14);
				c.collide(14);
				delay(500);
				c1.collide(0);
				c.collide(0);
				flg=3;
				T.timego();
			}
			c.draw();
		}
		if (i==155)
		{
			c.get(k,j+100,k+70,j,0,0,0);
			c.draw();
			k=200;
			c.get(k,j+100,k+70,j,4,3,8);
			if (flg==1)
			{
				c1.collide(14);
				c.collide(14);
				delay(500);
				c1.collide(0);
				c.collide(0);
				flg=3;
				T.timego();
			}
			c.draw();
		}
		if (i==77)
		{
			c.get(k,j+100,k+70,j,0,0,0);
			c.draw();
			k=335;
			c.get(k,j+100,k+70,j,4,3,8);
			if (flg==1)
			{
				c1.collide(14);
				c.collide(14);
				delay(500);
				c1.collide(0);
				c.collide(0);
				flg=3;
				T.timego();
			}
			c.draw();
		}
		if (i==157)
		{
			c.get(k,j+100,k+70,j,0,0,0);
			c.draw();
			k=335;
			c.get(k,j+100,k+70,j,4,3,8);
			if (flg==1)
			{
				c1.collide(14);
				c.collide(14);
				delay(500);
				c1.collide(0);
				c.collide(0);
				T.timego();
				flg=3;
			}
			c.draw();
		}
		if (i==72)
		{
			mil+=1;
			track(t,0);
			(t>70)?t=-200:t+=5;
			track(t,15);
			if ((l+stage)>=200 && (l+stage)<=300)
			{
				if (r1==0 && k==200)
				{
					flg=1;
      
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0):
c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else if (r1==1 && k==335)
				{
					flg=1;
				       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0):
c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else
					flg=2;
			}
			if (flg==1)
			{
				c.collide(14);
				c1.collide(14);
				flg=0;
				delay(1000);
				c.collide(0);
				c1.collide(0);
				c.get(k,j+100,k+70,j,4,3,8);
				c.draw();
				T.timego();
			}
			if (flg==2)
			{
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0):
c1.get(335,l+stage,405,l+stage-100,0,0,0);

				c1.draw();
				l=l+5;
			       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,5,6,7)
:c1.get(335,l+stage,405,l+stage-100,5,6,7);

				c1.draw();
				if (l+stage>300)
					flg=3;
			}
		}
		if (i==152)
		{
			mil+=2;
			track(t,0);
			(t>70)?t=-200:t+=20;
			track(t,15);
			if (l+stage>=200 && l+stage<=300)
			{
				if (r1==0 && k==200)
				{
					flg=1;
				       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0):
c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else if (r1==1 && k==335)
				{
					flg=1;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0):
c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else
					flg=2;
			}
			if (flg==1)
			{
				c.collide(14);
				c1.collide(14);
				flg=0;
				delay(1000);
				c.collide(0);
				c1.collide(0);
				c.get(k,j+100,k+70,j,4,3,8);
				c.draw();
				T.timego();
			}
			if (flg==2)
			{

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

				c1.draw();
				l+=10;

			       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,5,6,7)
:c1.get(335,l+stage,405,l+stage-100,5,6,7);

				c1.draw();
				if (l+stage>300)
					flg=3;
			}
		}
		if (i==80)
		{
			mil-=1;
			track(t,0);
			(t<-370)?t=-200:t-=5;
			track(t,15);
			if (l+stage>=200 && l+stage<=300)
			{
				if (r1==0 && k==200)
				{
					flg=1;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else if (r1==1 && k==335)
				{
					flg=1;

				       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else
					flg=2;
			}
			if (flg==1)
			{
				c.collide(14);
				c1.collide(14);
				flg=0;
				delay(1000);
				c.collide(0);
				c1.collide(0);
				c.draw();
				T.timego();
			}
			if (flg==2)
			{

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

				c1.draw();
				l=l-5;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,5,6,7)
:c1.get(335,l+stage,405,l+stage-100,5,6,7);

				c1.draw();
				if (l+stage>300)
					flg=3;
			}
		}
		if (i==160)
		{
			mil-=2;
			track(t,0);
			(t<-370)?t=-200:t-=20;
			track(t,15);
			if (l+stage>=200 && l+stage<=300)
			{
				if (r1==0 && k==200)
				{
					flg=1;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else if (r1==1 && k==335)
				{
					flg=1;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

					c1.draw();
				}
				else
					flg=2;
			}
			if (flg==1)
			{
				c.collide(14);
				c1.collide(14);
				flg=0;
				delay(1000);
				c.collide(0);
				c1.collide(0);
				c.draw();
				T.timego();
			}
			if (flg==2)
			{

(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

				c1.draw();
				l=l-10;

(r1==0)?c1.get(200,l+stage,270,l+stage-100,5,6,7)
:c1.get(335,l+stage,405,l+stage-100,5,6,7);

				c1.draw();
				if (l+stage>300)
					flg=3;
			}
		}
		if (flg==3)
		{
		       
(r1==0)?c1.get(200,l+stage,270,l+stage-100,0,0,0)
:c1.get(335,l+stage,405,l+stage-100,0,0,0);

			c1.draw();
			flg=0;
		}
		if (i==32)
		{
			sound(2000);
			delay(200);
		}
		nosound();
		if (mil>4)
		{
			miles+=1;
			mil=0;
		}
		if (mil<-4)
		{
			miles-=1;
			mil=0;
		}
		if (miles>=1000)
			break;
	}while(i!='\r');
	if (miles>=1000)
	{
		sound(3000);
		clearviewport();
		settextstyle(8,0,1);
		int i=T.minutes();
		if (i<8)
			outtextxy(50,100,"CONGRATULATIONS! \
You have won the competetion");
		else
			outtextxy(50,100,"SORRY! You fell \
out of time");
		delay(1000);
		getch();
		nosound();
	}
}

Why do you want to convert it to C?

becoz i need the car race program in c bt this game is not convert in c some problem are accure so u may help me?

Certain syntax and functions exist in C++ but not in C, and vice versa. What you need to do is to compile it and see where the error is. Then look for a substitute to the syntax or function to replace with... No, I am not going to do it for you because this is your assignment. I can only tell you what you could do...

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