#include 
#include 

int main()
{
      int h,i,j,k;

      clrscr();

      cout<<"Enter height: "; cin>>h;
      for(i=h;i>0;i--)
      {
       for(j=1;j<=h;j++)
       {
	cout<<" ";
	if(i==j)
	{
	 for(k=0;k<=h-i;k++)
	  cout<<"* ";
	}
       }
       if(i>1)
	cout<<"\n";
      }
      for(i=0;i<=h;i++)
      {
       cout<<" ";
       for(j=1;j<=h-1;j++)
       {
	if(i==j)
	{
	 for(k=h-(i+1);k>=0;k--)
	  cout<<" *";
	}  cout<<" ";
       }
	  cout<<"\n";
      }

      getch();
      return 0;
}

    Source: geocities.com/cplusplussurvivalkit