whats the error..?

Question

DX Ball Program in C++.

#include<stdio.h>
#include<conio.h>
#include<dos.h>
#include<graphics.h>
#include<dos.h>
#include<mouse.h>
#include<string.h>

int x,y,a,b,i,area,px,py,stat,bx=20,by=200,bxspeed=2,byspeed=2,scr=0;
static int sq[15][15];
char *paddal,*ball,dir[3]="br",score[4]="ss";
void main()
{
char*img1,*img2;
int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\tc\bgi");
x=getmaxx()/2,y=getmaxy()/2;

backfrm();
splace_form();
initmouse();
while(1)
{
getmousepos(&stat ,&px ,&py);
delay(11);
if(stat==1)
break;
}
mainfrm();

backfrm();
dpaddal();
backfrm();
dball();
backfrm();
lavel(1);
printlevel();
restrictmouseptr(16,500,540,500);

while(!kbhit())
{
delay(10);
movepaddal();
moveball();
}

getch();
}

//---------------------move ball---------------///
moveball()
{
setfillstyle(SOLID_FILL,1);
bar(bx-2,by-2,bx+12,by+12);
putimage(bx,by,ball,COPY_PUT);
balldir();
if(!strcmp(dir,"bl")) bx-=bxspeed,by+=byspeed;
if(!strcmp(dir,"br")) bx+=bxspeed,by+=byspeed;
if(!strcmp(dir,"tl")) bx-=bxspeed,by-=byspeed;
if(!strcmp(dir,"tr")) bx+=bxspeed,by-=byspeed;
}

//-----------------------ball diraction---------------//
balldir()
{
if(!strcmp(dir,"bl") && by>440) btp("tl");
if(!strcmp(dir,"br") && by>440) btp("tr");
if(!strcmp(dir,"tl") && by<122&&sq[(by-55)/15][(bx-16)/50]==0)
bts("bl");
if(!strcmp(dir,"tr") && by<122&&sq[(by-55)/15][(bx-16)/50]==0)
bts("br");

if(!strcmp(dir,"bl") && by<122&&sq[(by-55)/15][(bx-16)/50]==0)
bts("tl");
if(!strcmp(dir,"br") && by<122&&sq[(by-55)/15][(bx-16)/50]==0)
bts("tr");

if(!strcmp(dir,"tr") && by<40) strcpy(dir,"br"),sndplay(500);
if(!strcmp(dir,"tl") && by<40) strcpy(dir,"bl"),sndplay(500);

if(!strcmp(dir,"bl") && bx<20) strcpy(dir,"br"),sndplay(500);
if(!strcmp(dir,"tr") && bx>600) strcpy(dir,"tl"),sndplay(500);
if(!strcmp(dir,"tl") && bx<20) strcpy(dir,"tr"),sndplay(500);
if(!str

Answer 1

First, in sololearn, there is no designed program in C++, so there is no graphics.h header file