Производный класс ломаная линия

#include<iostream.h>
#include<graphics.h>
#include<conio.h>
#define k 3
//point
 
class point
{
public:
int x,y,color;
 
 
 
 void setx(int setx1)
 {
 cout<<"\n enter x:";
 cin>>setx1;
 x=setx1;
 }
 void sety(int sety1)
 {
 cout<<"\n enter y:";
 cin>>sety1;
 y=sety1;
 }
 void setcol(int setcolor)
 {
 cout<<"\n enter color:";
 cin>>setcolor;
 color=setcolor;
 }
 
 int getx()
 {
 return x;
 }
 int gety()
 {
 return y;
 }
 int getcol()
 {
 return color;
 }
 
 void Color()
 {
 int c;
 c=getcol();
 setcolor(c);
 }
 void removepoint()
 {
 setcolor(0);
 }
 
 void picturepoint()
 {
 putpixel(x,y,color);
 }
 
  void move()
 {
  int cifra;
  cleardevice();
  cout<<"\n if you want move, press the arrow ";
  cout<<"\n if you want exit, press esc";
  cifra=0;
  picturepoint();
  do
 {
  cifra=getch();
  switch(cifra)
 {
  case 72:y-=10;cleardevice();picturepoint();
  break;
  case 80:y+=10;cleardevice();picturepoint();
  break;
  case 75:x-=10;cleardevice();picturepoint();
  break;
  case 77:x+=10;cleardevice();picturepoint();
  break;
  }
  }
  while(cifra!=27);
  }
 
   void enterpoint()
  {
  cleardevice;
  int setx1,sety1;
  setx(setx1);
  sety(sety1);
  }
 
  void outputpoint()
  {
  cleardevice();
  cout<<"\n x = "<<getx();
  cout<<"\n y = "<<gety();
  cout<<"\n color = "<<getcol();
  }
  }
  mas[k];
 
 
void menupoint()
{int c,n,setcolor;
cout<<"\n select a point:";
cin>>n;
cout<<"\n if you want enter coordinats,press 1";
cout<<"\n if you want output coordinats,press 2";
cout<<"\n if you want change color,press 3";
cout<<"\n if you want draw point,press 4";
cout<<"\n if you want move,press  5";
cout<<"\n if you want exit,press 6\n";
cin>>c;
switch(c)
{
 case 1:cleardevice();mas[n].enterpoint();cout<<n;menupoint();break;
 case 2:cleardevice();mas[n].outputpoint();menupoint();break;
 case 3:cleardevice();mas[n].setcol(setcolor);menupoint();break;
 case 4:cleardevice();mas[n].picturepoint();menupoint();break;
 case 5:cleardevice();mas[n].move();menupoint();break;
 case 6:break;
 }
}
 
 
//line
 
 
class line
{
public:
int ax,ay,ax1,ay1,color;
 
 void set1x(int setax1)
 {
 cout<<"\nvvedite x:";
 cin>>setax1;
 ax=setax1;
 }
 
 void set1y(int setay1)
 {
 cout<<"\nvvedite y:";
 cin>>setay1;
 ay=setay1;
 }
 
 void set2x(int setax2)
 {
 cout<<"\nvvedite x:";
 cin>>setax2;
 ax1=setax2;
 }
 
 void set2y(int setay2)
 {
 cout<<"\nvvedite y:";
 cin>>setay2;
 ay1=setay2;
 }
 
 void setcol(int setcolor)
 {
 cout<<"\nvvedite zvet:";
 cin>>setcolor;
 color=setcolor;
 }
 
 int getax()
 {
 return ax;
 }
 int getay()
 {
 return ay;
 }
 int getax1()
 {
 return ax1;
 }
 int getay1()
 {
 return ay1;
 }
 int getcol()
 {
 return color;
 }
 
 void Color()
 {int c;
 c=getcol();
 setcolor(c);
 }
 
 void removeline()
 {
 setcolor(0);
 }
 
 void pictureline()
 {
 int c;
 c=getcol();
 setcolor(c);
 line(ax,ay,ax1,ay1);
 }
 
  void move()
 {
  int cifra;
  cleardevice();
  cout<<"\n if you want move, press arrow ";
  cout<<"\n if you want exit, press esc";
  cifra=0;
  pictureline();
  do{
  cifra=getch();
  switch(cifra)
 {
  case 72:ay-=10;ay1-=10;cleardevice();pictureline();
  break;
  case 80:ay+=10;ay1+=10;cleardevice();pictureline();
  break;
  case 75:ax-=10;ax1-=10;cleardevice();pictureline();
  break;
  case 77:ax+=10;ax1+=10;cleardevice();pictureline();
  break;
  }
  }
  while(cifra!=27);
  }
 
  void enterline()
  {
  cleardevice;
  int setax1,setay1,setax2,setay2;
  set1x(setax1);
  set1y(setay1);
  set2x(setax2);
  set2y(setay2);
  }
 
  void outputline()
  {
  cleardevice();
  cout<<"\n x="<<getax();
  cout<<"\n y="<<getay();
  cout<<"\n x1="<<getax1();
  cout<<"\n y1="<<getay1();
  cout<<"\nzvet="<<getcol();
  }
 
 }
   mas1[k];
 
 
void menuline()
{
int a,n,setcolor;
cout<<"\n select a line:";
cin>>n;
cout<<"\n if you want enter coordinats,press 1";
cout<<"\n if you want output coordinats,press 2";
cout<<"\n if you want change color,press 3";
cout<<"\n if you want draw line,press 4";
cout<<"\n if you want move,press  5";
cout<<"\n if you want exit,press 6\n";
cin>>a;
switch(a)
{
 case 1:cleardevice();mas1[n].enterline();cout<<n;menuline();break;
 case 2:cleardevice();mas1[n].outputline();menuline();break;
 case 3:cleardevice();mas1[n].setcol(setcolor);menuline();break;
 case 4:cleardevice();mas1[n].pictureline();menuline();break;
 case 5:cleardevice();mas1[n].move();menuline();break;
 case 6:break;
 }
}
void mainmenu()
{
 cout<<"if you want play work with point, press 1\n";
 cout<<"if you want play work with line, press 2\n";
 
void main()
{
int gdriver=EGA;
int gmode=EGAHI;
initgraph(&gdriver,&gmode,"D:\\BC\\BGI");
cleardevice();
menupoint();
menuline();
getch();
}