using System;  

public class PROG

{  

    public static void Main()

{

   int i,j,n=4,z=1,k;

​

   for(i=1;i<=n;i++)

   {

     for(j=n-1;j>=i;j--)

{

     Console.Write(" ");

}  

     for(k=1;k<=z;k++)

{

Console.Write("*");

     }

z+=2;

      Console.Write("\n");

   }

 }

 }

​