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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: Recursion, Yo
Date: Sat, 20 Apr 2024 06:03:32 -0700
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Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:

> Tim Rentsch <tr.17687@z991.linuxsc.com> writes:
> [...]
>
>>   * Algol is "strict" whereas C is "lax" - for example, in Algol
>>     the controlling expression of an 'if' statement must be a
>>     'Boolean expression', whereas in C it's just any expression
>
> Small quibble:  the controlling expression in C must be of scalar type.

Yes but my comment was only about syntax.  In Algol 60 a
'Boolean expression' is a syntactic category unrelated
to any semantic analysis.  In C there is no separate
syntactic catgory for "boolean" expressions;  there is
only 'expression'.