int j = 10;
     int k = 0;
     while (j > 0)
     {
        if (k <= j)
        {
           Console.Write("* ");
           Console.WriteLine();
        }
        j--;
     } Console.WriteLine();

for (initializer; condition; iterator) {
    body;
}

initializer;
while (condition) {
    body;
    iterator;
}

// Height and width of the triangle
var h = 8;
var w = 30;

// The iterator variables
var y = 1;
var x = 1;

// Print the tip of the triangle
Console.WriteLine("*");

y = 1;
while (y++ <h) {
    // Print the bit of left wall
    Console.Write("*");

    // Calculate length at this y-coordinate
    var l = (int) w*y/h;

    // Print the hypothenus bit
    x = 1;
    while (x++ <l-3) {
            Console.Write(" ");
    }
    Console.WriteLine("*");
}

// Now print the bottom edge
x = 0;
while (x++ <w) {
    Console.Write("*");
}

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

int x = 1;
int j = 10;
int k = 0;
while (j > 0)
{
    if (k <= j)
    {
       Console.Write("* ");
    }
    if (j >= 1)
    {
        int temp = x;
        while (temp >= 0)
        {
            Console.Write(" ");
            temp--;
        }
        x = x + 1;
        Console.Write("*");

     }
       Console.WriteLine();
       j--;
   }
   Console.WriteLine();
   double f = Math.Round(x * 1.5);
   while (f != 0)
   {
      Console.Write("*");
      f--;
   }