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Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops

From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c
Subject Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops
Date 2016-12-08 08:23 +1300
Message-ID <ear5trF5s31U1@mid.individual.net> (permalink)
References <f59dc04a-dbf6-4012-a97b-13d3ef9909a0@googlegroups.com> <9a9287d4-63ef-4f69-af18-dabb00ed7e67@googlegroups.com>

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On 12/ 6/16 07:43 AM, John Bode wrote:
>
> The directive
>
>      #define INITIAL_BALANCE 100.0
>
> creates the *macro* INITIAL_BALANCE; when your source code is run through
> the preprocessor, all instances of the text INITIAL_BALANCE will be
> replaced with the text 100.0 before the code is fed to the compiler
> proper.  So after preprocessing, the line
>
>      value[i] = INITIAL_BALANCE;
>
> becomes
>
>      value[i] = 100.0;
>
> The author is basically using the macro as a symbolic constant for
> the value 100.0.  This serves several purposes:

In this case all of these would be better served with a const float 
rather than a macro.

> 1. Ease of maintenance - if you want to change the initial balance for
>     each value[i] from 100.0 to some other value, you only have to change
>     it in that one place, as opposed to changing multiple occurrences of
>     100.0.  This especially saves your bacon if you're using a naked 100.0
>     for something *other* than your initial balance.
>
> 2. Guard against typos - the compiler isn't psychic; if I type 10.0 when I
>     meant 100.0, the compiler can't tell me I've goofed up (from its
>     perspective, both values are equally valid in the same context).  If I
>     use the symbolic constant, I'll always get the right value.  And if I
>     misspell the symbolic constant name, the compiler will yell at me.

-- 
Ian

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Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Potomac <ravine557@gmail.com> - 2016-12-05 06:32 -0800
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-05 08:34 -0700
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-05 15:43 +0000
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-05 10:41 -0700
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-05 15:37 +0000
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops John Bode <jfbode1029@gmail.com> - 2016-12-05 10:43 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops potomac <ravine557@gmail.com> - 2016-12-07 01:13 -0800
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-07 10:55 +0000
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Philip Lantz <prl@canterey.us> - 2016-12-07 20:34 -0800
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-08 11:08 +0000
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ian Collins <ian-news@hotmail.com> - 2016-12-08 08:23 +1300
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops potomac <ravine557@gmail.com> - 2016-12-07 01:07 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-07 08:46 -0700
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 16:23 +0000
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops potomac <ravine557@gmail.com> - 2016-12-07 01:12 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-07 08:49 -0700
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops John Bode <jfbode1029@gmail.com> - 2016-12-07 15:07 -0800
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops potomac <ravine557@gmail.com> - 2016-12-07 03:46 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-07 11:59 +0000
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 12:05 +0000
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-07 09:40 -0800
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-07 15:13 -0500
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 20:24 +0000
            Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-07 16:28 -0500
              Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 21:48 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-07 17:02 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 22:19 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-07 17:27 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 22:51 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 09:10 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-08 14:13 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops David Brown <david.brown@hesbynett.no> - 2016-12-08 15:57 +0100
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ian Collins <ian-news@hotmail.com> - 2016-12-08 18:02 +1300
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-08 08:48 -0800
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-07 15:33 -0800
            Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 09:13 -0500
              Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-08 14:22 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops David Brown <david.brown@hesbynett.no> - 2016-12-08 16:03 +0100
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 10:44 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Melzzzzz <Melzzzzz@zzzzz.com> - 2016-12-08 15:48 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 21:41 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-08 16:16 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 21:47 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-08 20:16 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops David Brown <david.brown@hesbynett.no> - 2016-12-09 11:19 +0100
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops supercat@casperkitty.com - 2016-12-09 08:00 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-13 13:10 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-13 13:55 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-15 01:13 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-15 07:02 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-15 19:56 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops supercat@casperkitty.com - 2016-12-18 10:00 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops supercat@casperkitty.com - 2016-12-14 11:45 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-14 12:14 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-15 01:24 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops supercat@casperkitty.com - 2016-12-15 08:02 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-15 12:10 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Philip Lantz <prl@canterey.us> - 2016-12-16 20:00 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 11:05 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 16:21 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-09 13:10 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 23:44 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops supercat@casperkitty.com - 2016-12-10 10:18 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 16:18 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 08:26 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 11:15 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 16:31 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 23:47 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-11 16:05 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 16:21 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-11 23:15 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 18:57 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-12 00:05 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 21:09 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-12 08:25 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-10 07:59 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-08 13:51 -0800
              Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-08 13:34 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-08 21:52 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-08 19:33 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 11:20 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops jameskuyper@verizon.net - 2016-12-09 13:28 -0800
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 23:51 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 16:46 +0000
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops "James R. Kuyper" <jameskuyper@verizon.net> - 2016-12-09 13:55 -0500
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 20:17 +0000
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-07 12:23 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops twalker470@googlemail.com - 2016-12-07 05:50 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-07 08:55 -0700
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-07 16:23 +0000
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-07 10:56 -0700
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops potomac <ravine557@gmail.com> - 2016-12-07 04:14 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Barry Schwarz <schwarzb@dqel.com> - 2016-12-07 11:03 -0800
  Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops John Bode <jfbode1029@gmail.com> - 2016-12-09 08:06 -0800
    Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Keith Thompson <kst-u@mib.org> - 2016-12-09 09:23 -0800
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 17:38 +0000
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops "James R. Kuyper" <jameskuyper@verizon.net> - 2016-12-09 14:01 -0500
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Richard Heathfield <rjh@cpax.org.uk> - 2016-12-09 19:09 +0000
            Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-09 12:38 -0700
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-10 00:08 -0500
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-10 00:16 -0500
      Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-09 23:59 -0500
        Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-10 11:51 +0000
          Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 16:22 -0500
            Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-11 21:52 +0000
              Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Jerry Stuckle <jstucklex@attglobal.net> - 2016-12-11 22:32 -0500
                Re: Stumped on the role of a particular statement in a program with Arrays & Nested For Loops Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-12 04:18 +0000

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