Change case : Change Case « Wide Character String « C Tutorial

1. C Tutorial
2. Wide Character String
3. Change Case

The functions wctrans() and towctrans() are also defined in

wctrans_t wctrans(const char *mapping);
wint_t towctrans(wint_t ch, wctrans_t mapping_ob);

1. tolower
2. toupper

The following sequence demonstrates wctrans() and towctrans():

#include <wctype.h>
#include <stdio.h>

int main(void){


  wctrans_t x;

  x = wctrans("tolower");

  wchar_t ch = towctrans(L'W', x);
  printf("%c", (char) ch);

}