main.go

package main

import (
	"bufio"
	"fmt"
	"log"
	"os"
	"strconv"
)

func AgeDistribution(age int) (distribution string) {

	if age < 0 || age > 100 {
		distribution = "This program is for humans"
	} else if 0 <= age && age <= 2 {
		distribution = "Still in Mama's arms"
	} else if 3 <= age && age <= 4 {
		distribution = "Preschool Maniac'"
	} else if 5 <= age && age <= 11 {
		distribution = "Elementary school"
	} else if 12 <= age && age <= 14 {
		distribution = "Middle school"
	} else if 15 <= age && age <= 18 {
		distribution = "High school"
	} else if 19 <= age && age <= 22 {
		distribution = "College"
	} else if 23 <= age && age <= 65 {
		distribution = "Working for the man"
	} else if 66 <= age && age <= 100 {
		distribution = "The Golden Years"
	}

	return distribution
}

func main() {
	file, err := os.Open(os.Args[1])
	if err != nil {
		log.Fatal(err)
	}
	defer file.Close()
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		//'scanner.Text()' represents the test case, do something with it

		var line string = scanner.Text()
		age, err := strconv.Atoi(line)
		if err != nil {
			panic(err)
		}

		fmt.Println(AgeDistribution(age))
	}
}