Funcition()
{
    switch (key)
    {
        case key1:
            statements 1;
            break;
        case key2:
            statements 2;
            break;
        ... 
        case keyn:
            statements n;
            break;
        default:
            break;
    }
}

// 3個(gè)文件，Client.cpp, TableDrave.h, TableDrive.cpp
 
// vvvvv Client.cpp begin
 
// ------------------------------------------------------------
// Name         :   Client.cpp
// Description  :   調(diào)用接口
// History      : 
// ------------------------------------------------------------
 
#include    "TableDrive.h"
 
// ------------------------------------------------------------
 
int main()
{
    TableDrive test;
    
    test.HandleKeyword(KEYWORD_A);
    test.HandleKeyword(KEYWORD_B);
    test.HandleKeyword(KEYWORD_C);
    test.HandleKeyword(KEYWORD_START);
    test.HandleKeyword(KEYWORD_D);
    
    return 0;
}
 
// ^^^^^ Client.cpp end
 
 
 
// vvvvv TableDrive.h begin
 
// ------------------------------------------------------------
// Name         :   TableDrive.h
// Description  :   表驅(qū)動(dòng)頭文件
// History      :   
// ------------------------------------------------------------
 
#ifndef     _TEST_DRIVE_H
#define     _TEST_DRIVE_H
 
 
#include    <map>
 
// ------------------------------------------------------------
 
// 測(cè)試用關(guān)鍵字
enum KEYWORD
{
    KEYWORD_START = -1,
    
    KEYWORD_A = 0,
    KEYWORD_B,
    KEYWORD_C,
    KEYWORD_D,  
    
    KEYWORD_END,
};
 
 
// ------------------------------------------------------------
 
// 可以使用 std:: 單個(gè)引用
using namespace std;
 
class TableDrive
{
public: 
 
    // ------------------------------------------------------------
    // Description : 
    //      根據(jù)關(guān)鍵字，執(zhí)行處理函數(shù)
    // Parameters : 
    //      string keyword，關(guān)鍵字
    // Return Value : 
    //      bool，true，函數(shù)執(zhí)行成功，false，找不到鍵字對(duì)應(yīng)的函數(shù)，或函數(shù)執(zhí)行失敗
    // Errors : 
    //      無(wú)
    // ------------------------------------------------------------ 
    bool HandleKeyword(int keyword);
    
    // ------------------------------------------------------------
    // Description : 
    //      關(guān)聯(lián)關(guān)鍵字到處理函數(shù)
    // Parameters : 
    //      無(wú)
    // Return Value : 
    //      bool，true，正常，false，異常
    // Errors : 
    //      無(wú)
    // ------------------------------------------------------------ 
    bool MapKeyToHandle();  
    
 
    TableDrive();
    
    ~TableDrive();
    
private:
    
    // vv 處理函數(shù)，true，執(zhí)行成功，false，執(zhí)行失敗
    bool HandleKeyA();
    bool HandleKeyB();
    bool HandleKeyC();
    // ^^
    
private:
 
    // :TRICKY: 成員函數(shù)指針定義
    typedef bool (TableDrive:: *PHandle)(void);
    map<int, PHandle>   m_KeyToHandle;      // 關(guān)鍵字對(duì)應(yīng)處理函數(shù)
};
 
#endif
 
// ^^^^^ TableDrive.h end
 
 
 
 
// vvvvv TableDrive.cpp begin
 
// ------------------------------------------------------------
// Name         :   TableDrive.cpp
// Description  :   表驅(qū)動(dòng)實(shí)現(xiàn)文件
// History      : 
// ------------------------------------------------------------
 
#include    <stdio.h>
 
#include    "TableDrive.h"
 
// ------------------------------------------------------------
 
 
// 根據(jù)關(guān)鍵字，執(zhí)行處理函數(shù)
bool TableDrive::HandleKeyword(int keyword)
{
    typedef map<int, PHandle>::const_iterator CI;
    CI iter = m_KeyToHandle.find(keyword);
 
    // 沒(méi)有搜索到關(guān)鍵字
    if (m_KeyToHandle.end() == iter)
    {
        printf("\n  @@ search Keyword %d fail!\n", keyword);
        return false;
    }
 
    // :TRICKY: 注意成員函數(shù)指針的引用格式
    PHandle pFunction = iter->second;
    return (this->*pFunction)();
}
 
 
TableDrive::TableDrive()
{
    printf("\n  vv TableDrive::TableDrive()\n");
    MapKeyToHandle();
}
 
TableDrive::~TableDrive()
{
    printf("\n  ^^ TableDrive::~TableDrive()\n");
}
 
 
// ------------------------------------------------------------
 
// 關(guān)聯(lián)關(guān)鍵字到處理函數(shù)
bool TableDrive::MapKeyToHandle()
{
    m_KeyToHandle[KEYWORD_A]    = &TableDrive::HandleKeyA;
    m_KeyToHandle[KEYWORD_B]    = &TableDrive::HandleKeyB;
    m_KeyToHandle[KEYWORD_C]    = &TableDrive::HandleKeyC;
        
    return true;
}
 
 
// 處理函數(shù) A
bool TableDrive::HandleKeyA()
{
    printf("\n  ** A, HandleKeyA()\n\n");
    
    return true;
}
 
bool TableDrive::HandleKeyB()
{
    printf("\n  ** B, HandleKeyB()\n\n");
    
    return true;
}
 
bool TableDrive::HandleKeyC()
{
    printf("\n  ** C, HandleKeyC()\n\n");
    
    return true;
}
 
// ^^^^^ TableDrive.cpp end