C locale.h

#define _CRT_SECURE_NO_WARNINGS

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



int main()
{
    time_t currtime;
    struct tm* timer;
    char buffer[80];

    time(&currtime);
    timer = localtime(&currtime);

    printf("Locale is: %s\n", setlocale(LC_ALL, "en_GB.UTF-8"));
    strftime(buffer, 80, "%c", timer);
    printf("Date is: %s\n", buffer);


    printf("Locale is: %s\n", setlocale(LC_ALL, "de_DE.UTF-8"));
    strftime(buffer, 80, "%c", timer);
    printf("Date is: %s\n", buffer);

    return 0;
}

#define _CRT_SECURE_NO_WARNINGS

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



int main()
{
    struct lconv* lc;

    setlocale(LC_MONETARY, "it_IT");
    lc = localeconv();
    printf("Local Currency Symbol: %s\n", lc->currency_symbol);
    printf("International Currency Symbol: %s\n", lc->int_curr_symbol);

    setlocale(LC_MONETARY, "en_US");
    lc = localeconv();
    printf("Local Currency Symbol: %s\n", lc->currency_symbol);
    printf("International Currency Symbol: %s\n", lc->int_curr_symbol);

    setlocale(LC_MONETARY, "en_GB");
    lc = localeconv();
    printf("Local Currency Symbol: %s\n", lc->currency_symbol);
    printf("International Currency Symbol: %s\n", lc->int_curr_symbol);

    printf("Decimal Point = %s\n", lc->decimal_point);

    return 0;
}