#include <monetary.h> ssize_t strfmon(char *s, size_t max, const char *format, ...); ssize_t strfmon_l(char *s, size_t max, locale_t locale, const char * format , ...);
The strfmon_l() function performs the same task, but uses the locale specified by locale. The behavior of strfmon_l() is undefined if locale is the special locale object LC_GLOBAL_LOCALE (see duplocale(3)) or is not a valid locale object handle.
Ordinary characters in format are copied to s without conversion. Conversion specifiers are introduced by a '%' character. Immediately following it there can be zero or more of the following flags:
Next, there may be a field width: a decimal digit string specifying a minimum field width in bytes. The default is 0. A result smaller than this width is padded with spaces (on the left, unless the left-justify flag was given).
Next, there may be a left precision of the form "#" followed by a decimal digit string. If the number of digits left of the radix character is smaller than this, the representation is padded on the left with the numeric fill character. Grouping characters are not counted in this field width.
Next, there may be a right precision of the form "." followed by a decimal digit string. The amount being formatted is rounded to the specified number of digits prior to formatting. The default is specified in the frac_digits and int_frac_digits items of the current locale. If the right precision is 0, no radix character is printed. (The radix character here is determined by LC_MONETARY, and may differ from that specified by LC_NUMERIC.)
Finally, the conversion specification must be ended with a conversion character. The three conversion characters are
|strfmon()||Thread safety||MT-Safe locale|
strfmon(buf, sizeof(buf), "[%^=*#6n] [%=*#6i]", 1234.567, 1234.567);outputs
[€ **1234,57] [EUR **1 234,57]
in the nl_NL locale. The de_DE, de_CH, en_AU, and en_GB locales yield