cstring、string、wstring、int、char*、tchar、 int、dword等相互转换代码输出测试

 #include <string>
 #include <tchar.h>  // _TCHAR
 #include <stdlib.h>
 #include <iostream>
 #include <atlstr.h>  //Cstring
 #include <atlconv.h> //W2A宏
 #include <xstring>

 using namespace std;

 int _tmain(int argc,_TCHAR* argv[])
 {
     /**********string->cstring ***********/
     //setlocale(LC_ALL, "Chinese-simplified");
     //wcout.imbue(locale("chs"));
     //std::string str = "123456！";
     //CString cstr = _T("");
     //方式一
     //cstr.Format(_T("%s"),str.c_str());
     //方式二
     //for(int i = 0; i < (int)str.length(); ++i)
     //{
     //    cstr += str[i];
     //}
     //方式三
     //cstr = str.c_str();
     //wcout << cstr << endl;

     /************    cstring->string      **************/
     //方式一
     //CString cstr1 = _T("this is cstring！");
     //string str1 = "";
     //str1 = cstr1.GetBuffer();
     //cstr1.ReleaseBuffer();
     //方式二
     //for (int i = 0; i < cstr1.GetLength(); ++i)
     //{
     //    str1 += cstr1[i];
     //}
     //方式三 W2A宏
     //str1 = W2A(cstr1);//用法还没弄懂,需要加入一些文件头 或宏定义   ？？？

     //cout << str1 << endl;

     /************* string-> char*************/
     //string str2 = "this is string2！";
     //方式一
     //char *p = (LPSTR)str2.c_str();
     //方式二
     //char t[200];
     //memset(t, 0,200);
     //strcpy(t,str2.c_str());
     //方式三   出现warning C4305: “=”: 从“int”到“char”截断   ？？？
     //char *pc = new char[str2.length() + 1];
     //pc[str2.length()] = '/0';
     //for (int i = 0; i < str2.length(); ++i)
     //{
     //    pc[i] = str2[i];
     //}
     //pc[str2.length()] = '/0';
     //cout << pc << endl;

     /****************** char*->string ******************/
     //char *pch = "this a char！";
     //方式一  只能用作初始化
     //string str3(pch);
     //方式二  assign()赋值
     //string str3;
     //str3.assign(pch);
     //cout << str3 << endl;

     //string是ansi编码字符char
     //TCHAR是unicode编码字符wchar_t
     /***********  string -> TCHAR* *********/
     //使用MultiByteToWideChar()函数

     /***********  TCHAR* ->string *********/
     //使用 WideCharToMultiByte()函数

     /**************** string 和char*转int ******************/
     //int atoi(const char *nptr);
     //long atol(const char *nptr);
     //long long atoll(const char *nptr);
     //long long atoq(const char *nptr); 

     /*******************int转char*和string************************/
     //使用itoa();itoa(i,str,10);

     /*******************  wstring转Csting     *****************/
     //wstring wstr = L"this a wstring！你好啊";
     //CString cstr4 = _T("");
     //cstr4 = wstr.c_str();
     //cout << cstr4 << endl;

     /*******************  Csting ->wstring  *****************/
     //CString cstr5 = _T("this a cstring5!");
     //wstring wstr5 = L"";
     //wstr5 = cstr5.AllocSysString();
     //wcout << wstr5 << endl;

     /********* Cstring转char* *************/
     //CString cstr6 = _T("this cstring6!");
     //char* pch6 = "";
     //pch6 = cstr6.GetBuffer();
     //cout << pch6 << endl;
     //cstr6.ReleaseBuffer();

     /************ char *转Cstring **********/
     //char pch[20] = "this a char* !";
     //CString str7 = _T("");
     //str7.Format("%s",pch);
     //cout << str7 << endl;

     /*********** TCHAR -> char ************/
     //TCHAR *pTch = _T("this a TCHAR");
     //int nLength = 2 * strlen(pTch);
     //char* pCh = new char[nLength + 1];
     //memset(pCh,0, nLength + 1);
     //strcpy(pCh, pTch);
     //cout << pCh << endl;

     /*********** char转tchar ************/

     system("pause");
     return ;
 }