class Program
{
static void Main(string[] args)
{
int x, y;
for (x = 1; x <= 6; x++)
{
for (y = 1; y <= x; y++)
{
Console.Write("*");
}
Console.WriteLine();
}
Console.ReadLine();
}
}             
                                          

                                        
*
**
***
****
*****