go语言输入输出

package main

import (
	"fmt"
	"strconv"
    //"os"
    //"bufio"
)

func main() {

	for {
		var num_str string
		var err error
		_, err = fmt.Scanf("%s", &num_str)
		if (err != nil) {
			//fmt.Println("scanf error", num_str)
			break;
		}
		//fmt.Println(num_str)
		
		//  str to int
		len := 1000
		num, _:=strconv.Atoi(num_str)
		var numberslice = make([]int,len,len)
		for i := 0; i <  num; i++ {
			var temp_str string
			_, err = fmt.Scanf("%s", &temp_str)
			inputnum, _:=strconv.Atoi(temp_str)
			if (inputnum < 1 ||  inputnum > len) {
				fmt.Println("error")
				continue
			} 
			numberslice[inputnum - 1] = 1
		}
		for i := 0; i < len; i++ {
			if (numberslice[i] == 1) {
				fmt.Println(i+1)
			}
		}
	}
 }

 func ScanLine() string {
	var c byte
	var err error
	var b []byte
	for ; err == nil; {
		_, err = fmt.Scanf("%c", &c)
		
		if c != '\n' {
			b = append(b, c)
		} else {
			break;
		}
	}
	
	return string(b)
}