wctrans
The latest version of this topic can be found at wctrans.
Determines a mapping from one set of character codes to another.
Syntax
wctrans_t wctrans(
const char *property
);
Parameters
property
A string that specifies one of the valid transformations.
Return Value
If the LC_CTYPE category of the current locale does not define a mapping whose name matches the property string property, the function returns zero. Otherwise, it returns a nonzero value suitable for use as the second argument to a subsequent call to towctrans.
Remarks
This function determines a mapping from one set of character codes to another.
The following pairs of calls have the same behavior in all locales, but it is possible to define additional mappings even in the "C" locale:
| Function | Same As |
|---|---|
tolower( c ) |
towctrans( c , wctrans("towlower" ) ) |
towupper( c ) |
towctrans( c , wctrans( "toupper" ) ) |
Requirements
| Routine | Required Header |
|---|---|
wctrans |
<wctype.h> |
For additional compatibility information, see Compatibility in the Introduction.
Example
// crt_wctrans.cpp
// compile with: /EHsc
// This example determines a mapping from one set of character
// codes to another.
#include <wchar.h>
#include <wctype.h>
#include <stdio.h>
#include <iostream>
int main()
{
wint_t c = 'a';
printf_s("%d\n",c);
wctrans_t i = wctrans("toupper");
printf_s("%d\n",i);
wctrans_t ii = wctrans("towlower");
printf_s("%d\n",ii);
wchar_t wc = towctrans(c, i);
printf_s("%d\n",wc);
}
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