the-way-to-go_ZH_CN/eBook/exercises/chapter_9/main_fibo.go

package main

import (
	"./fibo/fibo"
	"fmt"
)

var nextFibo int
var op string

func main() {
	/*
		result := 0
		for i:=0; i <= 10; i++ {
			result = fibo.Fibonacci(i)
			fmt.Printf("fibonacci(%d) is: %d\n", i, result)
		}
	*/
	op = "+"
	calls()
	fmt.Println("Change of operation from + to *")
	nextFibo = 0
	op = "*"
	calls()
}

func calls() {
	next()
	fmt.Println("...")
	next()
	fmt.Println("...")
	next()
	fmt.Println("...")
	next()
}

func next() {
	result := 0
	nextFibo++
	result = fibo.Fibonacci(op, nextFibo)
	fmt.Printf("fibonacci(%d) is: %d\n", nextFibo, result)
}

/* *****************************************************************
Output is:
fibonacci(1) is: 1
...
fibonacci(2) is: 2
...
fibonacci(3) is: 3
...
fibonacci(4) is: 5
Change of operation from + to *
fibonacci(1) is: 2
...
fibonacci(2) is: 4
...
fibonacci(3) is: 8
...
fibonacci(4) is: 32
********************************************************************/