minmax.go

package main

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

func main() {
	if len(os.Args) <= 1 {
		fmt.Println("Not enough arguments")
		os.Exit(1)
	}

	var (
		min = +math.MaxFloat64
		max = -math.MaxFloat64
	)

	for _, arg := range os.Args[1:] {
		v, err := strconv.ParseFloat(arg, 64)
		if err != nil {
			log.Fatalf("could not convert %q to float64: %v", arg, err)
		}

		if v < min {
			min = v
		}
		if v > max {
			max = v
		}
	}

	fmt.Printf("Min: %v\n", min)
	fmt.Printf("Max: %v\n", max)
}