Function:     userfxxx

Purpose:      Easy-C companions of userxxx_c

Category:     General C; Userinterface

Author:       Do Kester

Use:  
int userfxxx( 
	xxx	*items,		OUT ( see description )
	int     maxitems,	IN  ( is missing in userftext )
	int	default,	IN
	char	*keyword,	IN
	char	*format,	IN format as in printf
		... )		IN variable arguments as in printf

Description:
	Completely analogue to userxxx_c except for the fact that inputs are
	now indeed input only and the string `keyword' is a normal character
	string. The format and the variable arguments are combined into
	a message is passed to userxxx_c. 
        For userfchar, userfcharl userfcharu en userftext the type of
        items is fchar, otherwise it is the type fint*, float*, double*,
        or bool*.
	Note that there need not to be extra arguments, in which case format 
	is passed as message; only beware of the behaviour of `%'s.
        The declaration of this function is in "userfio.h",
        where similar functions for anyoutf, errorf and statusf
        are declared too.
        This function uses an internal buffer of 80 characters long.

Comment:      This routine is NOT callable in FORTRAN.

Updates:      06 Aug 1991: DK, Creation date
	      21 Aug 1991: DK, vararg list added
              04 Jun 1992: DK, into the system.
              25 Oct 1995: DK, userfio.h included as consistency check