write timetable with golang

timetable_map.go

package main
   
import (
       "fmt"
       "os"
       "strconv"
)

//tt := make(map[int] Timetable)

type Timetable struct {
     weekday   string 
     One    [3]string 
     Two    [3]string
     Three  [3]string 
     Four   [3]string
}

//func print(Id int) 用于接收输入的参数 ，并输出一个星期中的任意一天的课程。
func print(Id int) {
      tt := make(map[int] Timetable)
     tt[1] = Timetable{"Monday",[3]string{"ZhengZhuan", "1-18", "5-401"}, [3]string{"Huobi","1-18", "3-303"}, [3]string{"Xingxi","4,8,12,16", "3-307"}, [3]string{"empty","empty","empty"}}

     tt[2] = Timetable{"Tusday", [3]string{"English","1-18", "2-308"}, [3]string{"English Listening", "1-16", "1-508"}, [3]string{"empty","empty","empty"}, [3]string{"Kuiji", "1-6", "5-402"}}
     tt[3] = Timetable{"Wednesday", [3]string{"Tiyu","1-15","Ground"}, [3]string{"MaoGai", "1-18","3-308"}, [3]string{"ZhengZhuan", "1-6", "5-401"}, [3]string{"Huobi","1-6","1-303"}}
     tt[4] = Timetable{"Thusday", [3]string{"GouJiMaoYi","1-16","Z-704"}, [3]string{"English", "1-14", "2-308"}, [3]string{},[3]string{} }
     tt[5] = Timetable{"Friday", [3]string{"Kuiji","1-18","5-402"}, [3]string{"Renli","2-13", "5-201"}, [3]string{}, [3]string{}}
     tt[6] = Timetable{"Sat", [3]string{}, [3]string{}, [3]string{}, [3]string{} }
     tt[7] = Timetable{"Sun", [3]string{}, [3]string{}, [3]string{}, [3]string{} }

       if Id > 7 || Id < 1 {      //当 输入的数字大于7 或者小于1的时候，输出错误
             fmt.Println("Input Error\n")
             
}  else { 

       timetable , ok := tt[Id] 
               if ok {
              /* 
            fmt.Println(timetable.weekday)
            fmt.Println(timetable.One)
            fmt.Println(timetable.Two)
            fmt.Println(timetable.Three)
            fmt.Println(timetable.Four)
              */ 

           fmt.Println(timetable.weekday,"\n",
                        timetable.One,"\n", 
                        timetable.Two,"\n" ,
                        timetable.Three,"\n" ,
                        timetable.Four)
           
                    }
       }
}

//main  
func main() {
    day := os.Args
    if len(day) < 2 {
                /* 
              fmt.Printf("Useage: Print the timetalbe of\n" + 
                        "class 8, economi 2011")
              fmt.Printf("example:timetalbe weekday\n")
              fmt.Printf("weekday: 1, 2, 3, 4, 5, 6, 7\n")
                 */

                 fmt.Printf("Usage: print timetable of\n" +
		                "Class 8, Economi 2011\n" +
				"Example: timetable weekday\n" +
				"weekday = 1,2,3,4,5,6,7\n")
                 
    } else { 
    Day, _ := strconv.Atoi(day[1])
           
    print(Day)


           }
}