// countdown project main.go
/*
    Why doesn't this 30-liner work?
    I'd do the same thing in the shell.
    Of course not as float,  but I want
    to be able to enter 1. 5 hours later, for example, or in yoctoseconds.
*/
package main

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

func countdown(secs float64) {
    for secs >= 0.0 {
        fmt.Printf("\r%02.0f day(s) %02.0f:%02.0f:%02.0f", secs/86400.0, secs/3600.0, math.Mod((secs/60.0), 60.0), math.Mod(secs, 60.0))
        secs = secs - 1.0
        time.Sleep(time.Second)
    }
    return
}
func main() {
    str1 := os.Args[1]
    floatStr1, err := strconv.ParseFloat(str1, 64)
    if err != nil {
        fmt.Printf("not working \n")
    }
    countdown(floatStr1)
}