#define _XOPEN_SOURCE 700

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

int main() {

    struct tm date = { 0 };
    char buffer[64];

    date.tm_mday = 15;
    date.tm_mon = 0;
    date.tm_year = 124;
    date.tm_wday = 1;

    locale_t locale = newlocale( LC_TIME_MASK, "C", (locale_t) 0 );
    if ( locale == (locale_t) 0 ) {
        perror( "newlocale" );
        return EXIT_FAILURE;
    }

    if ( strftime_l( buffer, sizeof buffer, "%A %d %B %Y", &date, locale ) == 0 ) {
        fprintf( stderr, "Tampon trop petit.\n" );
        freelocale( locale );
        return EXIT_FAILURE;
    }

    printf( "%s\n", buffer );
    freelocale( locale );
    return EXIT_SUCCESS;
}