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

int main(int argc, char **argv)
{
	const char c[] = "en_US";
	char *messages;
	int ret;

	messages = setlocale(LC_MESSAGES, NULL);
    printf("LC_MESSAGES before is: %s\n", messages);

	ret = setenv("LANG", c, 1);
	printf("ret setenv() LANG: %d\n", ret);
	ret = setenv("LC_ALL", c, 1);
	printf("ret setenv() LC_ALL: %d\n", ret);
	messages = setlocale(LC_ALL, "");
	if ( NULL == messages ) {
		fprintf(stderr, "error setting locale, trying to set explicitly!\n");
		messages = setlocale(LC_ALL, c);
		if ( NULL == messages ) {
			fprintf(stderr, "ah, setlocale does not work!\n");
		}
	}

	messages = setlocale(LC_MESSAGES, NULL);
    printf("LC_MESSAGES after is: %s\n", messages);
	return 0;
}