golang-exercises/sum-args/main.go

package main

import (
	"fmt"
	"os"
	"strconv"
)

var result float64

func main() {
	if len(os.Args) < 2 {
		fmt.Println("Usage: ./sum-args 1 2 3 4 5 6")
		os.Exit(1)
	}

	for i := 1; i < len(os.Args); i++ {
		sum, _ := strconv.ParseFloat(os.Args[i], 64)
		result = result + float64(sum)
	}

	averageResult := getAverage(result, len(os.Args)-1)

	fmt.Printf("Total sum: %.4v\n", result)
	fmt.Printf("Average: %.4v\n", averageResult)
}
func getAverage(num float64, quantity int) (finalNum float64) {
	finalNum = num / float64(quantity)
	return finalNum
}