Serie de Fibonacci y Serie de Lucas

#include<iostream.h>
#include<stdio.h>
#include<conio.h>
void main (void)
{
textcolor(7);
textbackground(14);
clrscr();
int k=5,s,i,a=0,b=1,suma,w,v,p=1,r=3,t=5;
gotoxy(4,3);printf(" SECUENCIA DE FIBONACCI         Y        SECUENCIA DE LUCAS " );
for (s=2;s<=75;s++)
{
gotoxy(s,2);cout<<"*";
gotoxy(s,24);cout<<"*";
}
for (i=2;i<=24;i++)
{
gotoxy(2,i);cout<<"*";
gotoxy(75,i);cout<<"*";
}
gotoxy(8,4);cout<<a;
gotoxy(8,5);cout<<b;
for(w=1;w<=18;w++){
suma=a+b;
k++;
gotoxy(8,k);cout<<suma;
a=b;
b=suma;
}
gotoxy(50,4);cout<<p;
gotoxy(50,5);cout<<r;
for(v=1;v<=18;v++){
t++;
suma=p+r;
gotoxy(50,t);cout<<suma;
p=r;
r=suma;
}
getch ();
}