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

testlocales () {
    printf ("Negative sign test:\n");
    char *hyphenminus = "-1";
    // U2013 => E28093
    char *endash = "\xE2\x80\x93\x31";
    // U2212 => E28892
    char *minussign = "\xE2\x88\x92\x31";
    float x, y, z;
    sscanf (hyphenminus,"%f",&x);
    printf ("1) U002D %s = %f\n", hyphenminus, x);
    sscanf (endash,"%f",&y);
    printf ("2) U2013 %s = %f\n", endash, y);
    sscanf (minussign,"%f",&z);
    printf ("3) U2212 %s = %f\n", minussign, z);

    printf ("Decimal point test:\n");
    char *point = "123456.7890";
    char *comma = "123456,7890";
    float p, q;
    sscanf (point,"%f",&p);
    printf ("1) %s = %f\n", point, p);
    sscanf (comma,"%f",&q);
    printf ("2) %s = %f\n", comma, q);

    printf ("Thousands separator test:\n");
    char *none = "123456";
    char *tcomma = "123,456";
    char *fullstop = "123.456";
    char *space = "123 456";
    char *nbsp = "123\xC2\xA0" "456";
    // U202F => E280AF
    char *narrownbsp = "123\xE2\x80\xAF" "456";
    float a, b, c, d, e, f;
    sscanf (none,"%f",&a);
    printf ("1)       %s = %f\n", none, a);
    sscanf (tcomma,"%f",&b);
    printf ("2) U002C %s = %f\n", tcomma, b);
    sscanf (fullstop,"%f",&c);
    printf ("3) U002E %s = %f\n", fullstop, c);
    sscanf (space,"%f",&d);
    printf ("4) U0020 %s = %f\n", space, d);
    sscanf (nbsp,"%f",&e);
    printf ("5) U00A0 %s = %f\n", nbsp, e);
    sscanf (narrownbsp,"%f",&f);
    printf ("6) U202F %s = %f\n", narrownbsp, f);
    }

main () {
    setlocale (LC_ALL,"C");
    printf ("*** C ***\n");
    testlocales ();

    setlocale (LC_ALL,"cs_CZ.UTF-8");
    printf ("\n*** cs_CZ.UTF-8 ***\n");
    testlocales ();
}

*** C ***
Negative sign test:
1) U002D -1 = -1.000000
2) U2013 –1 = 0.000000
3) U2212 −1 = 0.000000
Decimal point test:
1) 123456.7890 = 123456.789000
2) 123456,7890 = 123456.000000
Thousands separator test:
1)       123456 = 123456.000000
2) U002C 123,456 = 123.000000
3) U002E 123.456 = 123.456000
4) U0020 123 456 = 123.000000
5) U00A0 123 456 = 123.000000
6) U202F 123 456 = 123.000000

*** cs_CZ.UTF-8 ***
Negative sign test:
1) U002D -1 = −1,000000
2) U2013 –1 = −1,000000
3) U2212 −1 = −1,000000
Decimal point test:
1) 123456.7890 = 123 456,000000
2) 123456,7890 = 123 456,789000
Thousands separator test:
1)       123456 = 123 456,000000
2) U002C 123,456 = 123,456000
3) U002E 123.456 = 123,000000
4) U0020 123 456 = 123 456,000000
5) U00A0 123 456 = 123 456,000000
6) U202F 123  456 = 123 456,000000