OFF-TOPIC: Algol 60 guru required

Kevin J. Cummings cummings at kjchome.homeip.net
Mon Aug 3 23:42:42 UTC 2009


On 08/03/2009 05:58 PM, Hiisi wrote:
> Dear All!
> Sorry for this off-topic, but I could not see any solution to my
> problem. I'm trying to transform old Algol 60 program to C++. I can
> understand every syntax of it except this construction:
> D(N+1):=N(N+2):=0.0;
> 
> Variables types:
> N - INTEGER
> D - REAL ARRAY
> What is it? How to represent in C++? Hope on this list there's people,
> who could remember that from the time...
> Thanks in advance!

Classic ALGOL-60 requires that a subscript-list be enclosed in square
brackets.  I would expect your statement should read:

D[N+1]:=N[N+2]:=0.0;

But this doesn't answer the question of N.  Is it an INTEGER scalar?
INTEGER array?  INTEGER procedure?  Its the N(N+2) part that bothers me.

The actual definitions of D and N would help here.

An assignment statement is defined as:

<left-part-list><expression>

and a left-part-list is one or more

<variable> :=

where each variable in the <left-part-list> receives the value of the
<expression>.

BTW, I'm just curious how you're handling the "pass by name" stuff....

> -- 
> Hiisi.
> Registered Linux User #487982. Be counted at: http://counter.li.org/
> 


-- 
Kevin J. Cummings
kjchome at rcn.com
cummings at kjchome.homeip.net
cummings at kjc386.framingham.ma.us
Registered Linux User #1232 (http://counter.li.org)




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