Christmas tree

gistfile1.go

package main

import "fmt"
import "math/rand"
import "time"

  func tree(width int, level int) {
     rand.Seed(time.Now().UnixNano())
     full_width := width + (2 * level)
     tree_level(1, width, full_width)
     for i := 0; i < level - 1; i++ {
 	tree_level(width - 2, width + 2, full_width)
     }
     trunk(full_width)
  }

  func tree_level(level int, width int, full_width int) {
    for level <= width {
	print_times("*", level, full_width)
	level += 2
    }
  } 

  func trunk(width int) {
     print_times("#", 1, width)
     print_times("#", 1, width)
  }
  
  func print_times(c string, times int, width int) {
     for i := 0; i < (width - times)/2; i++ {
        fmt.Print(" ")
     }
     for i := 0; i < times; i++ {
        if i > 0 && i < times -1 && rand.Intn(10) > 8 {
          fmt.Print("o")
        } else {
	  fmt.Print(c)
	}
     }
     fmt.Print("\n")
  }
func main() {
  width := 13
  level := 3

  tree(width, level) 
}