golang键盘输入至二维数组

使用的bufio库

func main() {

	var num [][]int
	for {
		reader := bufio.NewReader(os.Stdin)
		strBytes, _, _ := reader.ReadLine()
		str := strings.Fields(string(strBytes))
		var arr []int
		for i := range str {
			n, _ := strconv.Atoi(str[i])
			arr = append(arr, n)
		}
		num = append(num, arr)
		fmt.Println(num)
	}
}