CatYears WIP...

// You can edit this code!
// Click here and start typing.
//https://herz-fuer-tiere.de/haustiere/katzen/katzenjahre-in-menschenjahren-umrechnen#tabelle
package main

import "fmt"

type yearCount struct {
    years  int
    months int
}

func (yc *yearCount) Add(years, months int) {
    addYrs := years + months/12
    addMonths := months % 12
    yc.years += addYrs
    if yc.months+addMonths > 12 {
        yc.years += 1
        yc.months -= 12
    }
    yc.months += addMonths
}

func (yc *yearCount) String() string {
    return fmt.Sprintf("%d year(s) and %d month(s)", yc.years, yc.months)
}

func catYears(humanYears float32) float32 {
    if humanYears <= 1.0 {
        return 15.0 * humanYears
    }
    if humanYears <= 2.0 {
        return 15.0 + (10 * (1 - humanYears))
    }
    return 25.0 + (humanYears-2.0)*4
}

func catYears2(years, months int) yearCount {
    yc := yearCount{0, 0}
    if years == 0 {
        if months <= 1 {
            yc.Add(0, months*6)
        } else if months <= 3 {
            yc.Add(0, 6+54.0*((months-1)/2.0))
        }
    }
    return yc
}

func main() {
    yc := catYears2(0, 2)
    fmt.Println("CatYears:", yc.String())
}