C++ Code for generating Sierpinski gasket (triangle)

 C++ Code for generating Sierpinski gasket (triangle) 

My code for generating fractal using C++. Programming fractals is very interesting guys so try it out n have fun!!

Source code:

#include<iostream.h>
#include<conio.h>
#include<graphics.h>
void fract(int p[],int n);
void main(){ int gd=DETECT,gm;
initgraph(&gd,&gm,"C:\\TC\\BGI");
cout<<"Enter vertices of triangle:";
int j=0,p[20],i,n;
do{
for(i=0;i<3;i++){
cout<<"\n x"<<i+1<<"& y"<<i+1<<":";
cin>>p[j];
j=j+1;
cin>>p[j];
j=j+1;}
} while(j<6);
p[6]=p[0];
p[7]=p[1];
drawpoly(4,p);
cout<<"enter no: of iterations:";
cin>>n;
fract(p,n);
getch();
}
void fract(int p[],int n)
{int a[8],m[8],b[8],c[8],i,k;
 for(i=0;i<8;i=i+2)          
{m[i]=(int)(p[i]+p[i+2])/2;
m[i+1]=(int)(p[i+1]+p[i+3])/2;
}
m[6]=m[0];
m[7]=m[1];
drawpoly(4,m);
k=n-1;
if(k!=0){
a[0]=p[0];a[1]=p[1];a[2]=m[0];a[3]=m[1];a[4]=m[4];a[5]=m[5];a[6]=p[0];a[7]=p[1];
fract(a,k);
b[0]=p[2];b[1]=p[3];b[2]=m[0];b[3]=m[1];b[4]=m[2];b[5]=m[3];b[6]=p[2];b[7]=p[3];
fract(b,k);
c[0]=p[4];c[1]=p[5];c[2]=m[2];c[3]=m[3];c[4]=m[4];c[5]=m[5];c[6]=p[4];c[7]=p[5];
fract(c,k);}
}
OUTPUT: