[Get locale as a string] #c

get_locale.c

#include <locale.h>
#include <stdio.h>

int main(int argc, char* argv[]){
  
  setlocale(LC_ALL, "");
  printf("LC_ALL: %s\n", setlocale(LC_ALL, NULL));
  printf("LC_CTYPE: %s\n", setlocale(LC_CTYPE, NULL));

  return 0;
}

If locale is an empty string, "", each part of the locale that should be modified is set according to the environment variables. ... If locale is NULL, the current locale is only queried, not modified.

-- man -s 3 setlocale