Article View: comp.lang.misc
Article #962Re: Relationship between C and C++
From: robison
Date: Fri, 23 Mar 1990 01:30
Date: Fri, 23 Mar 1990 01:30
27 lines
1433 bytes
1433 bytes
/* Written 2:31pm Mar 21, 1990 by mccarrol@topaz.rutgers.ed in comp.lang.misc*/
>
> Unrestrained pointers are the data structures equivalent of
> uncontrolled GOTOs. A language like C that lets you do anything
> in the world that you please with pointers is very similar to a
> language like BASIC that lets you arbitrarily jump to anyplace you
> want to in your code. Sure, there's a lot of power in that! But
> there's a lot of unnecessary "danger".
I think a closer analogy is the following:
Control flow Data flow
------------ ---------
label r-value
goto assignment
To see the connection, observe what control flow does to the
program counter (instruction pointer). This would lead one to
conclude that any imperative language is "dangerous", whether
it has pointers or not.
Arch D. Robison
University of Illinois at Urbana-Champaign
UUCP: {pur-ee,convex}!uiucdcs!robison
Internet: robison@CS.UIUC.EDU
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!clyde.concordia.ca!uunet!dino!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!m.cs.uiuc.edu!robison From: robison@m.cs.uiuc.edu Newsgroups: comp.lang.misc Subject: Re: Relationship between C and C++ Message-ID: <5200059@m.cs.uiuc.edu> Date: 23 Mar 90 01:30:48 GMT References: <8432@hubcap.clemson.edu> Lines: 27 Nf-ID: #R:hubcap.clemson.edu:8432:m.cs.uiuc.edu:5200059:000:929 Nf-From: m.cs.uiuc.edu!robison Mar 22 10:11:00 1990