how to print a christmas tree?

[Lim Youjie]

hi, im a newbie to java.

this program allows the user to input the height of the christmas tree.
but i m not sure of the codings for the loop.
e.g the height indicate by user is 4

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

e.g the height indicate by user is 3

*
***
*****

[Martyn Clark]

Hi Lim i don't quite understand what you are trying to do with the loop and user input can you explain a little better or post some code.

[Lim Youjie]

import java.io.InputStreamReader;
import java.io.BufferedReader;
 
public class Tree
{
 
  int height;
  int count;
  String ast = "*";
 
  public Tree()
  {
    System.out.print("Enter height of christmas tree? ");
    try
    {
      InputStreamReader reader = new InputStreamReader(System.in);
      BufferedReader console = new BufferedReader(reader);
      String inStr = console.readLine();
      height = Integer.parseInt(inStr);
      for (int i =1; i <= height; i++)
      {
        ......... ---> //codings to draw out the christmas tree
      }
    }
 

    catch(Exception ex)
    {}
  }
 
  public static void main(String[] args)
  {
    new Tree();
  }
 
}

[Seb Mathe]

using char ast = '*';

you can do :

char[] line = new char[2*i-1];
java.util.Arrays.fill(line, c);
System.out.println(line);
[ October 11, 2005: Message edited by: Seb Mathe ]

[Lim Youjie]

may i know wats c?
thanks

[Lim Youjie]

thanks think i understand Martyn Clark and Seb Mathe.
you guys are great.

[Seb Mathe]

oops, "c" is "ast"

char c = '*';