package Shape

import "math"

type Point struct{
	X float64
	Y float64
}

func (point *Point)GetDistance(other *Point) float64{
	return  math.Sqrt(math.Pow((point.X-other.X),2)+math.Pow((point.Y-other.Y),2))
}

package Circle

import "awesomeProject/Shape"

type Circle struct {
	Heart  Shape.Point
	Radius float64
}

func (circle *Circle)IsPointInCircle(point *Shape.Point) bool{
	return  circle.Heart.GetDistance(point) <= circle.Radius
}

package main

import (
	"awesomeProject/Circle"
	"awesomeProject/Shape"
	"fmt"
	"math/rand"
	"time"
)

const total = 1000000
func main() {
	point := Shape.Point{1, 1}
	circle := Circle.Circle{point, 1}
	rand.Seed(time.Now().UnixNano())

	count := 0
	for i := 0; i < total;i++{
		x := rand.Float64()*2
		y := rand.Float64()*2
		pointTmp := Shape.Point{x, y}
		if(circle.IsPointInCircle(&pointTmp)){
			count++
		}
	}
	fmt.Println(float64(count * 4.0) / total)
}

go.mod

module awesomeProject

go 1.12