[unix-history] / games / arithmetic / arithmetic.6

.\" Copyright (c) 1989 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Eamonn McManus of Trinity College Dublin.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"	@(#)arithmetic.6	6.6 (Berkeley) 6/23/90
.\"
.TH ARITHMETIC 6 "June 23, 1990"
.UC 4
.SH NAME
arithmetic \- quiz on simple arithmetic
.SH SYNOPSIS
.B arithmetic
.B [
\-o +\-x/
.B ]
.B [
\-r range
.B ]
.SH DESCRIPTION
.I Arithmetic
asks you to solve problems in simple arithmetic.
Each question must be answered correctly before going on to the next.
After every 20 problems, it prints the score so far and the time taken.
You can quit at any time by typing the interrupt or end-of-file character.
.PP
The options are as follows:
.TP
\-o
By default,
.I arithmetic
asks questions on addition of numbers from 0 to 10, and corresponding
subtraction.
By supplying one or more of the characters
.BR +\-x/ ,
you can ask for problems in addition, subtraction, multiplication, and
division, respectively.
If you give one of these characters more than once, that kind of problem
will be asked correspondingly more often.
.TP
\-r
If a
.I range
is supplied,
.I arithmetic
selects the numbers in its problems in the following way.
For addition and multiplication, the numbers to be added or multiplied
are between 0 and
.IR range ,
inclusive.
For subtraction and division, both the required result and the number to
divide by or subtract will be between 0 and
.IR range .
(Of course,
.I arithmetic
will not ask you to divide by 0.)  The default
.I range
is 10.
.PP
When you get a problem wrong,
.I arithmetic
will remember the numbers involved, and will tend to select those numbers
more often than others, in problems of the same sort.
Eventually it will forgive and forget.
.PP
.I Arithmetic
cannot be persuaded to tell you the right answer.
You must work it out for yourself.
.SH DIAGNOSTICS
``What?'' if you get a question wrong.
``Right!'' if you get it right.
``Please type a number.'' if arithmetic doesn't understand what you typed.
.SH "SEE ALSO"
bc(1), dc(1)
Commit	Line	Data
15637ed4 RG	1	.\" Copyright (c) 1989 The Regents of the University of California.
	2	.\" All rights reserved.
	3	.\"
	4	.\" This code is derived from software contributed to Berkeley by
	5	.\" Eamonn McManus of Trinity College Dublin.
	6	.\"
	7	.\" Redistribution and use in source and binary forms, with or without
	8	.\" modification, are permitted provided that the following conditions
	9	.\" are met:
	10	.\" 1. Redistributions of source code must retain the above copyright
	11	.\" notice, this list of conditions and the following disclaimer.
	12	.\" 2. Redistributions in binary form must reproduce the above copyright
	13	.\" notice, this list of conditions and the following disclaimer in the
	14	.\" documentation and/or other materials provided with the distribution.
	15	.\" 3. All advertising materials mentioning features or use of this software
	16	.\" must display the following acknowledgement:
	17	.\" This product includes software developed by the University of
	18	.\" California, Berkeley and its contributors.
	19	.\" 4. Neither the name of the University nor the names of its contributors
	20	.\" may be used to endorse or promote products derived from this software
	21	.\" without specific prior written permission.
	22	.\"
	23	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	.\" SUCH DAMAGE.
	34	.\"
	35	.\" @(#)arithmetic.6 6.6 (Berkeley) 6/23/90
	36	.\"
	37	.TH ARITHMETIC 6 "June 23, 1990"
	38	.UC 4
	39	.SH NAME
	40	arithmetic \- quiz on simple arithmetic
	41	.SH SYNOPSIS
	42	.B arithmetic
	43	.B [
	44	\-o +\-x/
	45	.B ]
	46	.B [
	47	\-r range
	48	.B ]
	49	.SH DESCRIPTION
	50	.I Arithmetic
	51	asks you to solve problems in simple arithmetic.
	52	Each question must be answered correctly before going on to the next.
	53	After every 20 problems, it prints the score so far and the time taken.
	54	You can quit at any time by typing the interrupt or end-of-file character.
	55	.PP
	56	The options are as follows:
	57	.TP
	58	\-o
	59	By default,
	60	.I arithmetic
	61	asks questions on addition of numbers from 0 to 10, and corresponding
	62	subtraction.
	63	By supplying one or more of the characters
	64	.BR +\-x/ ,
65	you can ask for problems in addition, subtraction, multiplication, and
66	division, respectively.
67	If you give one of these characters more than once, that kind of problem
68	will be asked correspondingly more often.
69	.TP
70	\-r
71	If a
72	.I range
73	is supplied,
74	.I arithmetic
75	selects the numbers in its problems in the following way.
76	For addition and multiplication, the numbers to be added or multiplied
77	are between 0 and
78	.IR range ,
79	inclusive.
80	For subtraction and division, both the required result and the number to
81	divide by or subtract will be between 0 and
82	.IR range .
83	(Of course,
84	.I arithmetic
85	will not ask you to divide by 0.) The default
86	.I range
87	is 10.
88	.PP
89	When you get a problem wrong,
90	.I arithmetic
91	will remember the numbers involved, and will tend to select those numbers
92	more often than others, in problems of the same sort.
93	Eventually it will forgive and forget.
94	.PP
95	.I Arithmetic
96	cannot be persuaded to tell you the right answer.
97	You must work it out for yourself.
98	.SH DIAGNOSTICS
99	``What?'' if you get a question wrong.
100	``Right!'' if you get it right.
101	``Please type a number.'' if arithmetic doesn't understand what you typed.
102	.SH "SEE ALSO"
103	bc(1), dc(1)