Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

VC .NETÖÐString^ ÓëANSI C char*»¥×ª

VC.NETÖеÄStringÀàÊÇÀûÓÃUnicode×Ö·û¼¯±àÂëÀ´±íʾÎı¾¡£Unicode×Ö·û¼¯ÖÐÿ¸ö×Ö·û(ºº×Ö¡¢Ó¢ÎÄ×Öĸ)¶¼Õ¼2¸ö×Ö½Ú£¬ÇÒÆä×Ö·û´®ÊÇÒÔ2¸öÁ¬ÐøµÄ\0½áβµÄ¡£
ANSIµÄASCII×Ö·û¼¯ÊÇ×î³£¼ûµÄ×Ö·û¼¯£¬³£ÓÃÓÚ±íʾtxtµÄÎı¾Îļþ¡£ÔÚASCII×Ö·û¼¯ÖÐÓ¢ÎÄÕ¼Ò»¸ö×Ö½Ú£¬ºº×Ö2¸ö×Ö½Ú£¬ÇÒÆä×Ö·û´®ÊÇÒÔÒ»¸ö\0½áβµÄ¡£
ÔÚÀûÓÃVC.NET½øÐлìºÏ±à³Ìʱ£¬¾­³£ÐèҪʵÏÖStringÓëchar*µÄ»¥×ª£¬ÀýÈçÔÚTextBox¿Ø¼þÖÐÊäÈëµÄText×÷Ϊfopen»òÕßCreateFileµÄÎļþÃû²ÎÊýʱ£¬³£ÐèҪʵÏÖchar*µÄת»¯¡£¹ÊÌṩÈçϵÄת»¯·½·¨£º
 
 
#include "stdafx.h"
#include <stdio.h>
#include <windows.h>
 
 
int main(array<System::String ^> ^args)
{
 // String^ converts to char*
 
 char szDestOutChar[256];
 String^ SrcInStr = "C:\\Documents and Settings\\Adiminstrator\\ÎÒµÄÎĵµ\\swq.txt";
 int SourceStrLen = SrcInStr->Length;
 wchar_t *pwszStr = new wchar_t[SourceStrLen + 1];
 array <System::Char>^ pClr = SrcInStr->ToCharArray();
 for (int i = 0; i < SourceStrLen; i++)
 {
   pwszStr[i] = pClr[i];
 }
 pwszStr[SourceStrLen] = '\0';
 ::WideCharToMultiByte(CP_ACP, NULL, pwszStr, -1, szDestOutChar, 256, NULL, NULL);
 
 // char* converts to String^ 
 
 char* szInSrcChar =  "C:\\Documents and Settings\\Adiminstrator\\ÎÒµÄÎĵµ\\swq.txt";
 int wcsLen = ::MultiByteToWideChar(CP_ACP, NULL, szInSrcChar, strlen(szInSrcChar), NULL, 0);
 wchar_t* wszStr = new wchar_t[wcsLen + 1];
 ::MultiByteToWideChar(CP_ACP, NULL, szInSrcChar, strlen(szInSrcChar), wszStr, wcsLen);
 wszStr[wcsLen] = '\0';
 String^ ClrOutStr = gcnew String(wszStr);
 
 System::Console::WriteLine("Press ENTER key to exit !");
 System::Console::Read();
 
 delete pwszStr;
 delete wszStr;
 return 0;
}


Ïà¹ØÎĵµ£º

Á´±íµÄ»ù±¾²Ù×÷(cʵÏÖ£©

  
Á´±í¶¨Òå¼°²Ù×÷µÄÔ´Îļþ£ºemployee.h
//
#pragma once
#ifndef __EMPLOYEE_H__
#define __EMPLOYEE_H__
#include<stdio.h>
#include<malloc.h>
typedef struct employee{
int id;
int age;
int salary;
}EmpType;
typedef struct Node{
EmpType data;
struct Node *next;
}L ......

CºÍC£«£«»ìºÏ±à³ÌÏà¹ØÎÊÌâ½â¾ö·½·¨

Ò» £º½â¾öC»òC++ÖеÄmultiple definition ofÎÊÌâ
server.cpp
clientp2p.cpp
#include "exception.h"
#include "clientp2p.h"
clientp2p.h
ÖÐдÓÐËùÓеÄÈ«¾Ö±äÁ¿¼°Æä³õʼ»¯Öµ
ºÍº¯ÊýÉùÃ÷
1.server.cppÖУº
ÒýÓÃ
£º
#include "clientp2p.h"
int Main(....)
{
...
}
2.clientp ......

¹ØÓÚcÖÐvolatile¹Ø¼ü×Ö£¨×ªÌù£©

 Ò»¸ö¶¨ÒåΪvolatileµÄ±äÁ¿ÊÇ˵Õâ±äÁ¿¿ÉÄܻᱻÒâÏë²»µ½µØ¸Ä±ä£¬ÕâÑù£¬±àÒëÆ÷¾Í²»»áÈ¥¼ÙÉèÕâ¸ö±äÁ¿µÄÖµÁË¡£¾«È·µØ˵¾ÍÊÇ£¬ÓÅ»¯Æ÷ÔÚÓõ½Õâ¸ö±äÁ¿Ê±±ØÐëÿ´Î¶¼Ð¡ÐĵØÖØжÁÈ¡Õâ¸ö±äÁ¿µÄÖµ£¬¶ø²»ÊÇʹÓñ£´æÔڼĴæÆ÷ÀïµÄ±¸·Ý¡£ÏÂÃæÊÇvolatile±äÁ¿µÄ¼¸¸öÀý×Ó£º
    1). ²¢ÐÐÉ豸µÄÓ²¼þ¼Ä´æÆ÷£¨È磺״̬¼Ä´æÆ ......

extern "C"Ïê½â

 Ê±³£ÔÚcppµÄ´úÂëÖ®Öп´µ½ÕâÑùµÄ´úÂë: 
#ifdef __cplusplus 
extern "C" { 
#endif 
//Ò»¶Î´úÂë 
#ifdef __cplusplus 

#endif 
¡¡¡¡ÕâÑùµÄ´úÂëµ½µ×ÊÇʲôÒâ˼ÄØ£¿Ê×ÏÈ£¬__cplusplusÊÇcppÖеÄ×Ô¶¨Òåºê£¬ÄÇô¶¨ÒåÁËÕâ¸öºêµÄ»°±íʾÕâÊÇÒ ......

ʹÓÃEclipse+MinGW¹¹½¨WindowsÉϵÄC/C++¿ª·¢»·¾³

Ç°ÑÔ
Eclipse×÷Ϊһ¿î¼«ÆäÓÅÐãµÄJava IDE£¬ÒѾ­µÃµ½¹ã·ºµÄÈÏ¿É¡£µ±È»Eclipse²¢²»ÏÞÓÚJava¿ª·¢£¬ÓÉÓÚÆäÓÅÐãµÄ»ù´¡¼Ü¹¹£¬EclipseÒѾ­³ÉΪһ¸ö¿ÉÒÔÈÝÄÉÒ»ÇÐÓ뿪·¢ÓйصŤ¾ßµÄƽ̨¡£
µ±È»ÈÝÄÉÒ»Çв¢²»Òâζ×ÅÊʺÏÓÚÒ»ÇС£ÏñC/C++ÕâÑùÔç¾Í´æÔڵIJ¢¹ã·ºÓ¦ÓõÄÓïÑÔ£¬Ôç¾ÍÓÐÒ»´óÅú¿ÉÓõÄIDE£¬Ò²ÓкܶàÈËϲ»¶ÓÃvi/emacs×÷Ϊ×Ô¼ºµÄ¿ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ