高级软件工程 实验三

实验标题：实现内部模块化的命令行菜单小程序

实验内容：源程序转写为go程序

实验结果：menu.c代码

/**************************************************************************************************/ /* Copyright (C) mc2lab.com, SSE@USTC, 2014-2015                                                  */ /*                                                                                                */ /*  FILE NAME             :  menu.c                                                               */ /*  PRINCIPAL AUTHOR      :  Mengning                                                             */ /*  SUBSYSTEM NAME        :  menu                                                                 */ /*  MODULE NAME           :  menu                                                                 */ /*  LANGUAGE              :  C                                                                    */ /*  TARGET ENVIRONMENT    :  ANY                                                                  */ /*  DATE OF FIRST RELEASE :  2014/08/31                                                           */ /*  DESCRIPTION           :  This is a menu program                                               */ /**************************************************************************************************/ /*  * Revision log:  *  * Created by Mengning, 2014/08/31  * Edited by Zhouyan， 2017/5/7  */ package main import "fmt"   func Help() func Quit() const (     CMD_MAX_LEN = 128     DESC_LEN = 1024  DESC_LEN = 1024 ) var cmd [CMD_MAX_LEN] char /* data struct and its operations */ type DataNode struct {     tLinkTableNode *pNext  char* cmd  char* desc  int (*handler)() } func SearchCondition bool(tLinkTableNode * pLinkTableNode) {     var * pNode DataNode  pNode = tDataNode *(pLinkTableNode)     if(strcmp(pNode->cmd, cmd) == 0)     {         return  1      }     return 0        } /* find a cmd in the linklist and return the datanode pointer */ func ShowAllCmd int(tLinkTable * head) {     var * pNode DataNode     pNode = tDataNode*(GetLinkTableHead(head))     for pNode != NULL     {         fmt.Printf("%s - %s\n", pNode.cmd, pNode.desc)         pNode = tDataNode*(GetNextLinkTableNode(head,tLinkTableNode *(pNode)))     }     return 0 } func InitMenuData int(tLinkTable ** ppLinktable) {     *ppLinktable = CreateLinkTable()  var *pNode DataNode     pNode = tDataNode*(malloc(sizeof(tDataNode)))     pNode.cmd = "help"     pNode.desc = "Menu List:"     pNode.handler = Help     AddLinkTableNode(*ppLinktable,tLinkTableNode *(pNode))     pNode = tDataNode*(malloc(sizeof(tDataNode)))     pNode.cmd = "version"     pNode.desc = "Menu Program V1.0"     pNode.handler = NULL     AddLinkTableNode(*ppLinktable,tLinkTableNode *(pNode))     pNode = tDataNode*(malloc(sizeof(tDataNode)))     pNode.cmd = "quit"     pNode.desc = "Quit from Menu Program V1.0"     pNode.handler = Quit     AddLinkTableNode(*ppLinktable,tLinkTableNode *(pNode))       return 0 } /* menu program */ tLinkTable * head = NULL func main() int {     InitMenuData(&head)    /* cmd line begins */     for true     {         fmt.Printf("Input a cmd number > ")         fmt.Scanf("%s", cmd)   var *p DataNode         p = FindCmd(head, cmd)         if p==NULL         {             fmt.Printf("This is a wrong cmd!\n ")             continue         }         fmt.Printf("%s - %s\n", p->cmd, p->desc)         if p.handler != NULL         {             p.handler()         }        } } func Help() int {     ShowAllCmd(head)     return 0 } func Quit() bool {     exit(0) }

实验心得：

转写要点：1、函数定义，类型后置

2、I/O函数

3、类型转换，括号位置变更

4、不使用分号

5、部分结构（for）等删去括号