如我想查看strlwr（）的函數體是怎么實現的，要在那個路徑下查找呢？或我想查看其它一些參數，如某個函數的具體參數，要去哪找？
2 回答
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TA貢獻2011條經驗 獲得超2個贊
安裝盤下: VC98\CRT\SRC\STRLWR.C
char * __cdecl _strlwr (
char * string
)
{
#if defined (_WIN32)
int dstlen; /* len of dst string, with null */
unsigned char *dst = NULL; /* destination string */
#if defined (_MT)
int local_lock_flag;
#endif /* defined (_MT) */
if (__lc_handle[LC_CTYPE] == _CLOCALEHANDLE)
{
char *cp; /* traverses string for C locale conversion */
for (cp=string; *cp; ++cp)
{
if ('A' <= *cp && *cp <= 'Z')
*cp += 'a' - 'A';
}
return(string);
} /* C locale */
_lock_locale( local_lock_flag )
#if defined (_MT)
if (__lc_handle[LC_CTYPE] == _CLOCALEHANDLE)
{
char *cp; /* traverses string for C locale conversion */
_unlock_locale( local_lock_flag )
for (cp=string; *cp; ++cp)
{
if ('A' <= *cp && *cp <= 'Z')
*cp += 'a' - 'A';
}
return(string);
} /* C locale */
#endif /* defined (_MT) */
/* Inquire size of dst string */
if (0 == (dstlen = __crtLCMapStringA(__lc_handle[LC_CTYPE], LCMAP_LOWERCASE,
string, -1, NULL, 0, 0, TRUE)))
goto error_cleanup;
/* Allocate space for dst */
if (NULL == (dst = (unsigned char *) _malloc_crt(dstlen*sizeof(unsigned char))))
goto error_cleanup;
/* Map src string to dst string in alternate case */
if (0 == __crtLCMapStringA(__lc_handle[LC_CTYPE], LCMAP_LOWERCASE,
string, -1, dst, dstlen, 0, TRUE))
goto error_cleanup;
/* copy dst string to return string */
strcpy(string, dst);
error_cleanup:
_unlock_locale( local_lock_flag )
_free_crt (dst);
return (string);
#else /* defined (_WIN32) */
char * cp;
for (cp=string; *cp; ++cp)
{
if ('A' <= *cp && *cp <= 'Z')
*cp += 'a' - 'A';
}
return(string);
#endif /* defined (_WIN32) */
}
WR.C
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