Thread: excercise

the book says: write a program that displays the following patterns seperately, one below the other. use for loops to generate the patterns. All stars should be printed by a single statement of the form Console.Write('*'); A statement of the form Console.WriteLine(); can be used to position the next line. A statement of the form Console.Write(' '); can be used to display spaces for the last two patterns. there should be no other output statements in the program.

Code:

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

the code is

Code:

using System;

namespace ex5_7
{
	
	class Class1
	{


		[STAThread]
		static void Main(string[] args)
		{
			//first right triangle of stars bottom left
			for(int outer=1; outer<=10; outer++)
			{
				for(int inner=1; inner<=outer; inner++)
				{
					Console.Write('*');
				}
				Console.WriteLine();
			}
			//second right triangle top left
			for(int outer=10; outer>0; outer--)
			{
				for(int inner=1; outer>=inner; inner++)
				{
					Console.Write('*');
				}
				Console.WriteLine();
			}
			
			
			//third right triangle top right
			int noofstars = 10;

			for(int outer=1; outer<=10; outer++, noofstars--)
			{		
				for(int stars=noofstars; stars>0; stars--)
				{
					Console.Write("*");
				}
				Console.WriteLine();
				if(outer==10)
					break;
				
				for(int space=1; space<=outer; space++)
					Console.Write(" ");
			}

			//fourth right triange bottom right
			noofstars=1;

			for(int outer=10; outer>0; outer--, noofstars++)
			{		
				for(int space=1; space<outer; space++)
					Console.Write(" ");
				
				for(int stars=1; noofstars>=stars; stars++)
				{
					Console.Write("*");
				}
				Console.WriteLine();
			}

			
		}
	}
}

the next excercise asks...modify excercise 5.7 to combine your code from the four seperate triangles of asterisks into a single program that prints all four patterns side by side, making clever use of nested for loops.

i have started by writing down what i need to do in pseudo code which is bacically a sequential list of actions but i have no idea how to 'get off the ground' on this one, i would appreciate some feedback please. the problem is the the cursor gets drawn linearly and nested for loops work like car mileometers, i cant think how to make both work together...pls help


luigi