The First Card Game in C++

#include<iostream.h>
#include<dos.h>
#include<conio.h>
#include<dos.h>

#include<graphics.h>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
void*image1;
void*image;
float a[51],bp[40],cp[40],dp[40];
int
key,car=5,var,next,esc,taken,chum,remark,bli=3,k,number,q,marksum,mon,kal=
0,jai[3],sub,symb,dont,chance=2,repe=0,repeat=0;
int shuf,player=1,guess,remain=0,count=0,mark[3];
float play[3],greatest,great=232,small,remai,in1[3],in2[3],in3[3];
char wini[4][35]={" You have done it man. Well done"," You are cool
man","
a wonderful game"," you are the best"};
char losi[4][35]={" You should improve your play"," Show me a better
game
next time"," I didn't feel any competition"," Better luck next time"};
char uttar='n';
char egg,help[39],place[3][10]={"player","cpu2","cpu1"};

int get_scancode()
{
       union REGS inregs, outregs ;

       while( !kbhit( ) )
           ;

       inregs.h.ah = 0 ;
       int86(22, &inregs, &outregs) ;
       return ( outregs.h.ah ) ;
}

void drawbox(char z[120])
{
 setcolor(15);
 setviewport(0,0,639,75,1);
 clearviewport();
 setviewport(0,0,639,479,1);
 rectangle(0,0,639,75);
 outtextxy(10,10,"message box:-");
 outtextxy(30,25,z);
}

class board
{
 int bk,x1,y1,x2,y2;

 public:

 board(void)
 {
  x1=0;
  y1=76;
  x2=639;
  y2=376;
 }

 void draw(void)
 {
  setcolor(15);
  setbkcolor(BLACK);
  rectangle(0,377,639,479);
  rectangle(260,455,314,475);
  rectangle(324,455,378,475);
  setfillstyle(1,GREEN);
  floodfill(2,379,15);
  outtextxy(270,463,"PLAY");
  outtextxy(334,463,"TAKE");
  outtextxy(10,387,"Your Hand -");
  rectangle(0,76,639,376);
  rectangle(0,150,20,250);
  rectangle(615,150,639,250);
  rectangle(269,376,369,359);
  settextstyle(0,1,2);
  outtextxy(20,160,"CPU 1");
  outtextxy(639,160,"CPU 2");
  settextstyle(0,0,1);
  outtextxy(290,365,"YOURSELF");
  settextstyle(0,0,0);
  setfillstyle(1,BLUE);
  floodfill(300,300,15);
 }

 void play1(float,int);

}plai;

void board::play1(float ax,int cx)
{
 int x,y,no;
 switch(cx)
 {
  case 1:{
      x=71;
      y=210;
      no=210;
     }break;
  case 2:{
      x=310;
      y=307;
      no=50;
     }break;
  case 3:{
      x=560;
      y=190;
      no=230;
     }break;
 }
 int sym=int((ax*10 -int(ax)*10)+0.1);
 char symb[2];
 symb[0]=char(sym);
 symb[1]='