Нужна подмога с С++

#include<graphics.h>
#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<iostream.h>
 
class sixtriang
{
public:
 
//virtual void name()=0;
 
 
~sixtriang(void) //Destructor
{
cout<<"Destructor example - this destructor not complete";
}
};
 
//***********************************************************************
/*void title(void);
void six(void);*/
 
 
 
/*sixtriang::~sixtriang(void)
{
cout<<"Destructor example - this destructor not complete";
}*/
//***********************************************************************
 
 
class set:virtual public sixtriang
 
{
 
public:
 
 
void set::title(void)
{
textcolor(YELLOW);
cprintf("Created by: MIDO BNTU 417328/14 Titenko K.G.");
cout<<endl<<endl;
}
 
void set::six(void)
{
//INITIALIZATION/////////////////////////////////////////////////////////
int Drv,Mod,Er;
Drv=DETECT;
initgraph(&Drv,&Mod,"");
 
///ERROR TRY/////////////////////////////////////////////////////////////
Er=graphresult();
if(Er!=grOk)
{
cprintf("ERROR-EGAVGA.BGI NOT FOUND !!!");
getch();
exit(1);
}
/////////////////////////////////////////////////////////////////////////
 
 
 
int poly[14];
 
 
 
////////////////////////
poly[0]=25*2;//po x 1-a tochka
poly[1]=15*2;//po y 1-a tochka
 
poly[2]=55*2;
poly[3]=15*2;
 
poly[4]=70*2;//po x 3-a tochka
poly[5]=40*2;//po y 3-a tochka
 
poly[6]=55*2;
poly[7]=65*2;
 
poly[8]=25*2;
poly[9]=65*2;
 
poly[10]=10*2;//po x 6-a tochka
poly[11]=40*2;//po y 6-a tochka
 
poly[12]=25*2;//poly[0]
poly[13]=15*2;//poly[1]
 
drawpoly(7,poly);
 
getch();
clearviewport();
closegraph();
}
 
}
//***********************************************************************
 
main()
{
set polycub;
 
polycub.title();
getch();
 
textcolor(LIGHTGREEN);
 
 
polycub.six();
 
cprintf("GRAPHICS TASK IS END");
getch();
}