Question 39040 in Ubuntu Question posted in
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Format a thousand separator in C with FreeBSD – Ubuntu

How to format a thousand separator in C with FreeBSD? I obtain the code from one of the answers here How can I format currency with commas in C? and it is working in my Ubuntu Linux system but not in my FreeBSD 11.4 and 14-CURRENT systems.

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

int main(void)
{
    setlocale(LC_NUMERIC, "");
    printf("$%'.2Lfn", 123456789.00L);
    printf("$%'.2Lfn", 1234.56L);
    printf("$%'.2Lfn", 123.45L);
    return 0;
}
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2

Answers


  1. Chosen as BEST ANSWER
    0

    Just found this, by specifying this argument en_US.UTF-8 in the setlocale() will also provide thousand separator in C with FreeBSD.

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

int main(void)
{
    setlocale(LC_NUMERIC, "en_US.UTF-8");
    printf("$%'.2Lfn", 123456789.00L);
    printf("$%'.2Lfn", 1234.56L);
    printf("$%'.2Lfn", 123.45L);
    return 0;
}

  2. 0

    The printf manpage(3) says:

    `” (apostrophe) Decimal conversions (d, u, or i) or the integral
    portion of a floating point conversion (f or F) should be grouped and
    separated by thousands using the non-monetary separator returned by
    localeconv(3).

    so, it uses the locale separator.

    You can do something like that:

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

int main(void)
{
    const char sep = ''';

    setlocale(LC_NUMERIC, ""); 
    localeconv()->thousands_sep[0] = sep;

    printf("$%'04.2Lfn", 123456789.00L);
    printf("$%'04.2Lfn", 1234.56L);
    printf("$%'04.2Lfn", 123.45L);

    return 0;
}

    then compile like this:

    cc -o myprog myprog.c

    which will output:

    ./myprog
$123'456'789.00
$1'234.56
$123.45
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