package main

import (
    "fmt"
    "time"
)

func main() {
    intchan := make(chan int)
    floatchan := make(chan float64)
    var fibratio float64

    fiblength := 50

    go fib(intchan, floatchan, fiblength)
    go ratio(floatchan, fiblength)

    for i := 0; i < fiblength; i++ {
        fibnum := <-intchan

        if i > 0 {
            fibratio = <-floatchan
        }

        fmt.Println(fibnum, " - ", fibratio)
        time.Sleep(time.Millisecond * 250)
    }
}

func fib(intchan chan int, floatchan chan float64, length int) {
    var next, current, last int

    for i := 0; i < length; i++ {
        if current == 0 {
            next = 1
        } else {
            next = current + last
        }

        last = current
        current = next

        intchan <- next
        floatchan <- float64(next)
    }
}

func ratio(floatchan chan float64, length int) {
    var first bool = true
    var x, y, fibratio float64

    for i := 0; i < length; i++ {
        if first == true {
            y = <-floatchan
            x = <-floatchan
        } else {
            x = <-floatchan
        }

        fibratio = x / y
        y = x
        first = false
        floatchan <- fibratio
    }
}