go 实现斐波那契额

留给注释了：

package main

import "fmt"

func fibona() func() int{
	i, j := 1, 1
	return func() int{
		i, j = j , j+i
		return i
	}
}

func main() {
	fibonaa := fibona()
	fmt.Println("sssssssss = ", fibona())
	for i:= 1; i <10; i++ {
		fmt.Println("i = ", i, "num = ", fibonaa())
	}
}