转义字符引起的疑惑
'\\' 表示 单反斜杠
那么我们在拼接字符串的时候，如何表示反斜杠呢？ "\\test.xml" ,是这样嘛？ 还是"\test.xml'
如果是"\\test.xml" 的话， 再看一个例子：
url里的链接拼接，只能用 "\test.html" ，不能使用"\\test.html" 。怎么回事？我已经晕了
[解决办法]
\和/是不一样
[解决办法]
_makepath, _wmakepath
Create a path name from components.
void _makepath( char *path, const char *drive, const char *dir, const char *fname, const char *ext );
void _wmakepath( wchar_t *path, const wchar_t *drive, const wchar_t *dir, const wchar_t *fname, const wchar_t *ext );
Routine Required Header Compatibility
_makepath <stdlib.h> Win 95, Win NT
_wmakepath <stdlib.h> or <wchar.h> Win 95, Win NT
For additional compatibility information, see Compatibility in the Introduction.
Libraries
LIBC.LIB Single thread static library, retail version
LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version
Return Value
None
Parameters
path
Full path buffer
drive
Drive letter
dir
Directory path
fname
Filename
ext
File extension
Remarks
The _makepath function creates a single path and stores it in path. The path may include a drive letter, directory path, filename, and filename extension. _wmakepath is a wide-character version of _makepath; the arguments to _wmakepath are wide-character strings. _wmakepath and _makepath behave identically otherwise.
Generic-Text Routine Mappings
TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined
_tmakepath _makepath _makepath _wmakepath
The following arguments point to buffers containing the path elements:
drive
Contains a letter (A, B, and so on) corresponding to the desired drive and an optional trailing colon. _makepath inserts the colon automatically in the composite path if it is missing. If drive is a null character or an empty string, no drive letter and colon appear in the composite path string.
dir
Contains the path of directories, not including the drive designator or the actual filename. The trailing slash is optional, and either a forward slash (/) or a backslash (\) or both may be used in a single dir argument. If a trailing slash (/ or \) is not specified, it is inserted automatically. If dir is a null character or an empty string, no slash is inserted in the composite path string.
fname
Contains the base filename without any extensions. If fname is NULL or points to an empty string, no filename is inserted in the composite path string.
ext
Contains the actual filename extension, with or without a leading period (.). _makepath inserts the period automatically if it does not appear in ext. If ext is a null character or an empty string, no period is inserted in the composite path string.
The path argument must point to an empty buffer large enough to hold the complete path. Although there are no size limits on any of the fields that constitute path, the composite path must be no larger than the _MAX_PATH constant, defined in STDLIB.H. _MAX_PATH may be larger than the current operating-system version will handle.
Example
/* MAKEPATH.C */
#include <stdlib.h>
#include <stdio.h>
void main( void )
{
char path_buffer[_MAX_PATH];
char drive[_MAX_DRIVE];
char dir[_MAX_DIR];
char fname[_MAX_FNAME];
char ext[_MAX_EXT];
_makepath( path_buffer, "c", "\\sample\\crt\\", "makepath", "c" );
printf( "Path created with _makepath: %s\n\n", path_buffer );
_splitpath( path_buffer, drive, dir, fname, ext );
printf( "Path extracted with _splitpath:\n" );
printf( " Drive: %s\n", drive );
printf( " Dir: %s\n", dir );
printf( " Filename: %s\n", fname );
printf( " Ext: %s\n", ext );
}
Output
Path created with _makepath: c:\sample\crt\makepath.c
Path extracted with _splitpath:
Drive: c:
Dir: \sample\crt\
Filename: makepath
Ext: .c
File Handling Routines
See Also _fullpath, _splitpath
[解决办法]