package main

import (
	"fmt"
)

func average() {
	numbers := [3]float64{71.8, 56.2, 89.5}
	var sum float64
	for _, number := range numbers {
		sum += number
	}
	sampleCount := float64(len(numbers))
	fmt.Printf("Average: %0.2f\n", sum/sampleCount)
}

func main() {
	numbers := [6]int{3, 16, -2, 10, 23, 12}
	for i, number := range numbers {
		if number >= 10 && number <= 20 {
			fmt.Println(i, number)
		}
	}
}