using System;
public class Program
{
public static void Main()
int num,x=1;
Console.WriteLine("please enter number:");
while(int.TryParse(Console.ReadLine(),out num))
while(x<=num*num)
Console.Write("*");
if(x%num==0)
Console.WriteLine("*");
x++;
}
Console.WriteLine("please enter anumber:");
x=1;
Console.WriteLine("end of program:");