示例一般文本程序

项目
02/21/2013

Microsoft 专用

下面的过程中， GENTEXT.C，提供了有关使用的更详细的插图在 TCHAR.H 定义的一般文本映射:

// GENTEXT.C
// use of generic-text mappings defined in TCHAR.H

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <direct.h>
#include <errno.h>
#include <tchar.h>

int __cdecl _tmain(int argc, _TCHAR **argv, _TCHAR **envp)
{
   _TCHAR buff[_MAX_PATH];
   _TCHAR *str = _T("Astring");
   char *amsg = "Reversed";
   wchar_t *wmsg = L"Is";

#ifdef _UNICODE
   printf("Unicode version\n");
#else /* _UNICODE */
#ifdef _MBCS
   printf("MBCS version\n");
#else
   printf("SBCS version\n");
#endif
#endif /* _UNICODE */

   if (_tgetcwd(buff, _MAX_PATH) == NULL)
       printf("Can't Get Current Directory - errno=%d\n", errno);
   else
       _tprintf(_T("Current Directory is '%s'\n"), buff);
   _tprintf(_T("'%s' %hs %ls:\n"), str, amsg, wmsg);
   _tprintf(_T("'%s'\n"), _tcsrev(_tcsdup(str)));
   return 0;
}

如果 _MBCS 定义， GENTEXT.C 映射到以下 MBCS 程序:

// crt_mbcsgtxt.c

/* 
 * Use of generic-text mappings defined in TCHAR.H
 * Generic-Text-Mapping example program
 * MBCS version of GENTEXT.C
 */

#include <stdio.h>
#include <stdlib.h>
#include <mbstring.h>
#include <direct.h>

int __cdecl main(int argc, char **argv, char **envp)
{
   char buff[_MAX_PATH];
   char *str = "Astring";
   char *amsg = "Reversed";
   wchar_t *wmsg = L"Is";

   printf("MBCS version\n");

   if (_getcwd(buff, _MAX_PATH) == NULL) {
       printf("Can't Get Current Directory - errno=%d\n", errno);
   }
   else {
       printf("Current Directory is '%s'\n", buff);
   }

   printf("'%s' %hs %ls:\n", str, amsg, wmsg);
   printf("'%s'\n", _mbsrev(_mbsdup((unsigned char*) str)));
   return 0;
}

如果 _UNICODE 定义， GENTEXT.C 映射到以下 Unicode 程序的版本。有关使用wmain 的更多信息在 Unicode 程序用作替换 main的，请参见使用 wmain 在 C 语言参考。

// crt_unicgtxt.c

/* 
 * Use of generic-text mappings defined in TCHAR.H
 * Generic-Text-Mapping example program
 * Unicode version of GENTEXT.C
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <direct.h>

int __cdecl wmain(int argc, wchar_t **argv, wchar_t **envp)
{
   wchar_t buff[_MAX_PATH];
   wchar_t *str = L"Astring";
   char *amsg = "Reversed";
   wchar_t *wmsg = L"Is";

   printf("Unicode version\n");

   if (_wgetcwd(buff, _MAX_PATH) == NULL) {
      printf("Can't Get Current Directory - errno=%d\n", errno);
   }
   else {
       wprintf(L"Current Directory is '%s'\n", buff);
   }

   wprintf(L"'%s' %hs %ls:\n", str, amsg, wmsg);
   wprintf(L"'%s'\n", wcsrev(wcsdup(str)));
   return 0;
}

如果 _MBCS 和 _UNICODE 未定义， GENTEXT.C 映射到单字节 ASCII 代码，如下所示:

// crt_sbcsgtxt.c
/* 
 * Use of generic-text mappings defined in TCHAR.H
 * Generic-Text-Mapping example program
 * Single-byte (SBCS) Ascii version of GENTEXT.C
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <direct.h>

int __cdecl main(int argc, char **argv, char **envp)
{
   char buff[_MAX_PATH];
   char *str = "Astring";
   char *amsg = "Reversed";
   wchar_t *wmsg = L"Is";

   printf("SBCS version\n");

   if (_getcwd(buff, _MAX_PATH) == NULL) {
       printf("Can't Get Current Directory - errno=%d\n", errno);
   }
   else {
       printf("Current Directory is '%s'\n", buff);
   }

   printf("'%s' %hs %ls:\n", str, amsg, wmsg);
   printf("'%s'\n", strrev(strdup(str)));
   return 0;
}

特定于 Microsoft 的结尾

请参见

参考

通过

示例一般文本程序

请参见

参考

其他资源