Demo for a reddit post: http://www.reddit.com/r/learnprogramming/comments/1n6okj/new_to_programming_how_would_you_construct_this/

fall.go

package main

import (
    "fmt"
    "flag"
)

func main(){
    tempMorning := flag.Int("morning", 60, "Temperature in the morning.")
    tempAfternoon := flag.Int("afternoon", 75, "Temperature in the afternoon.")
    flag.Parse()

    if *tempAfternoon > 75 && *tempMorning < 60 {
        fmt.Println("It is fall.")
    } else {
        fmt.Println("It is some other season.")
    }
}