A program to display the following series:

#include<iostream.h>
#include<conio.h>

void main()
{
clrscr();
int i,j,k,l;

for(i=1;i<=3;i++)
{
for(j=1;j<=i;j++)
cout<<"*";

for(k=2;k>=i;k--)
if(k==1)
cout<<" ";
else
cout<<" ";

for(l=1;l<=i;l++)
if(l==3)
cout<<" ";
else
cout<<"*";

cout<<"\n";
}

for(i=1;i<=2;i++)
{
for(j=2;j>=i;j--)
cout<<"*";

for(k=1;k<=i;k++)
if(k==2)
cout<<" ";
else
cout<<" ";

for(l=2;l>=i;l--)
cout<<"*";

cout<<"\n";
}

getch();
}

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