Golang添加学生成绩管理最low版本

package main

import "fmt"

func main() {
    var stu = make(map[int]map[string]string)
    var istrue = false

    for true {
        s1 := `
    1 添加学生成绩
    2 查看学生成绩
    3 修改学生成绩
    4 删除学生成绩
    5 退出程序
`
        fmt.Println(s1)

        var sub_stu = make(map[string]string)

        var choice int
        fmt.Println("请输入选择:")
        fmt.Scanln(&choice)

        switch  choice {
        case 1:
            // 添加学生成绩
            var sid int
            fmt.Println("请输入学号:")
            fmt.Scanln(&sid)

            var name string
            fmt.Println("请输入姓名:")
            fmt.Scanln(&name)

            var english_score string
            fmt.Println("请输入英语成绩:")
            fmt.Scanln(&english_score)

            var chinese_score string
            fmt.Println("请输入语文成绩:")
            fmt.Scanln(&chinese_score)

            var math_score string
            fmt.Println("请输入数学成绩:")
            fmt.Scanln(&math_score)

            sub_stu["name"] = name
            sub_stu["english_score"] = english_score
            sub_stu["math_score"] = math_score
            sub_stu["chinese_score"] = chinese_score
            stu[sid] = sub_stu

        case 2:
            // 查看学生成绩
            for k,v := range stu{
                fmt.Printf("学号：%d\t姓名：%s\t语文成绩：%s\t数学成绩: %s\t英语成绩：%s\n", k,v["name"],
                    v["chinese_score"],
                    v["math_score"],
                    v["english_score"])
            }
        case 3:
            // 修改学生成绩
            fmt.Println("请输入学生ID：")
            var sid int
            fmt.Scanln(&sid)
            for k,_ := range stu{
                if k == sid {
                    var name string
                    fmt.Println("请输入姓名:")
                    fmt.Scanln(&name)

                    var english_score string
                    fmt.Println("请输入英语成绩:")
                    fmt.Scanln(&english_score)

                    var chinese_score string
                    fmt.Println("请输入语文成绩:")
                    fmt.Scanln(&chinese_score)

                    var math_score string
                    fmt.Println("请输入数学成绩:")
                    fmt.Scanln(&math_score)
                    sub_stu["name"] = name
                    sub_stu["english_score"] = english_score
                    sub_stu["math_score"] = math_score
                    sub_stu["chinese_score"] = chinese_score
                    stu[sid] = sub_stu
                }
            }
        case 4:
            // 删除
            fmt.Println("请输入学生ID：")
            var sid int
            fmt.Scanln(&sid)
            for k,_ := range stu{
                if k == sid {
                    delete(stu,sid)
                }
            }
        case 5:
            // 退出程序
            fmt.Println("退出程序")
            istrue = true
            //break
        }
        if istrue {
            break
        }
    }
}

关注微信公众号：搜索  "IT渣女talks"