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.\" ========================================================================
.\"
.IX Title "ARITHMETIC 1"
.TH ARITHMETIC 1 "2001-06-06" "perl v5.20.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
arithmetic \-\- improve your arithmetic skills.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBarithmetic\fR [\fB\-o\fR \fB+\-x/\fR] [\fB\-r\fR \fIrange\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBarithmetic\fR prompts you with simple arithmetic exercises, and
verifies your answers. \fBarithmetic\fR will reply with \fBRight!\fR 
if you answered correctly, and with \fBWhat?\fR if you answered incorrectly.
If \fBarithmetic\fR thinks your answer is not a number, it will
respond with \fBPlease type a number!\fR and repeat the exercise.
.PP
After 20 questions, \fBarithmetic\fR will tell you how many exercises you
answered correctly, and how much time it took. Interrupting the game
triggers the same reports; the game is then terminated.
.PP
If you answer an exercise incorrectly, \fBarithmetic\fR will remember the
numbers involved, and favour those over others.
.SS "\s-1OPTIONS\s0"
.IX Subsection "OPTIONS"
\&\fBarithmetic\fR accepts the following options:
.IP "\fB\-o\fR \fB+\-x/\fR" 4
.IX Item "-o +-x/"
By default, \fBarithmetic\fR only asks addition exercises. By giving the
\&\fB\-o\fR option, \fBarithmetic\fR will randomly choose from the given \fIoperators\fR.
If an operator is given multiple times, that operator will be picked
more often. The more it is repeated, the more it will be picked.
.IP "\fB\-r\fR \fIrange\fR" 4
.IX Item "-r range"
For \fIaddition\fR and \fImultiplication\fR, \fBarithmetic\fR will pick both
\&\fIoperands\fR in the range from 0 to \fIrange\fR, inclusively. For
\&\fIsubtraction\fR and \fIdivision\fR, both the answer, and the right \fIoperand\fR
will be in this range. The default range is \fB10\fR.
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
The working of \fBarithmetic\fR is not influenced by any environment variables.
.SH "BUGS"
.IX Header "BUGS"
This implementation of \fBarithmetic\fR does not respect the end of file
character.
.SH "REVISION HISTORY"
.IX Header "REVISION HISTORY"
.Vb 3
\&    $Log: arithmetic,v $
\&    Revision 1.1.1.1  2001/06/06 08:53:50  sdague
\&    initial import
\&
\&    Revision 1.1.1.1  2001/05/13 19:55:21  sdague
\&    added initial import of PPT work
\&
\&    Revision 1.1  1999/03/14 07:44:35  abigail
\&    Initial revision
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
The Perl implementation of \fBarithmetic\fR was written by Abigail,
\&\fIabigail@fnx.com\fR.
.SH "COPYRIGHT and LICENSE"
.IX Header "COPYRIGHT and LICENSE"
This program is copyright by Abigail 1999.
.PP
This program is free and open software. You may use, copy, modify, distribute,
and sell this program (and any modified variants) in any way you wish,
provided you do not restrict others from doing the same.