Obtaining Pi with Monte Carlo Method

CheckPi.go

package main

import "fmt"
import "math/rand"
import "sync"

func main() {
	var wg sync.WaitGroup
	length := 1.0
	oncircle := 0
	onsquare := 0
	try := 10000000
	randomdot := func(maxLength float64) {
		defer wg.Done()
		x := rand.Float64() * maxLength
		y := rand.Float64() * maxLength
		if x*x + y*y > maxLength*maxLength {
			onsquare++
		} else {
			oncircle++
		}
	}
	for i := 0; i<try; i++ {
		wg.Add(1)
		go randomdot(length)
	}
	wg.Wait()
	fmt.Println(onsquare)
	fmt.Println(oncircle)
	fmt.Println((float64(oncircle) / float64(onsquare + oncircle)) * 4.0 / (length * length))
}