localeconv() creates and sets the components
of an lconv structure with values appropriate
for the formatting of numeric quantities according to the rules
of the current locale.
struct lconv
*localeconv(void);
The members of the structure with type char * are
strings. Any of these, except for decimal_point,
can point to "" to indicate that the value is
not available in the current locale or is of zero length.
The members with type char are non-negative numbers.
Any of the members can be CHAR_MAX to indicate
that the value is not available in the current locale.
The members included in lconv are
described in The lconv structure.
The function returns a pointer to the filled-in object. The
structure pointed to by the return value is not modified by the
program, but might be overwritten by a subsequent call to the localeconv() function.
In addition, calls to the setlocale() function
with categories LC_ALL, LC_MONETARY,
or LC_NUMERIC might overwrite the contents of
the structure.
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