golang for循環

golang的for循環和while差不多，for循環省略初始條件就是while

死循環：

func forever() {
	for {
		fmt.Println("abc")
	}
}

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)
//整數轉換成二進制
func convertToBin(n int) string{
	//需要判斷n = 0 or n < 0
	result := ""
    for ; n > 0; n /=2 {
    	lsb := n % 2
    	result = strconv.Itoa(lsb) + result
	}
    return result
}
//死循環
func forever() {
	for {
		fmt.Println("abc")
	}
}

func readFIle(filename string) {
	file, err := os.Open(filename)
	//報錯誤之后終止程序的運行
	if err != nil {
		panic(err)
	}
	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		fmt.Println(scanner.Text())
	}
}

func main() {
	fmt.Println(
		convertToBin(12),
		convertToBin(13),
		convertToBin(0),
		)
	filename := "abc.txt"
	readFIle(filename)
}