#include<iostream.h>

#include<conio.h>

void main()

{

clrscr(); //to clear the screen

int i,j,k,n;

cout<<“How many lines?”;

cin>>n;

n*=2;

for(i=0;i<n;i+=2)

{

for(j=n-2;j>i;j-=2)

cout<<” “;

for(k=0;k<=i;++k)

cout<<“*”;

cout<<“n”;

}

for(i=0;i<n;i+=2)

{

for(j=0;j<i;j+=2)

cout<<” “;

for(k=n-1;k>i;–k)

cout<<“*”;

cout<<“n”;

}

getch(); //to stop the screen

}