Am 16.07.2019 um 20:40 schrieb Seymour J Metz:
Pascal makes the same difference between := (assignment) and = (comparison)
Pascal is a castrated version of Algol 60,
Hmmm ... the only feature that Pascal lacks IMO is call-by-name,
but this is something not easy to understand (and explain) to today's
developers
and the value of this concept is questionable.
Pascal has a very rich type concept and is easy to learn and to understand,
and you can write significant programs using it (although it needs some
extensions to the standard to be really useful).
So does C.
You're missing Charles Mills's point; in C it is easy to type "=" where you meant "=="; typing
":=" when you meant "=" is much less likely.
Ok, this is indeed dangerous and needs much care, when coding C;
if (x = 5)
changes x to 5 and is always true;
you will only get a warning, if you are compiling with sensible warning
options.
Kind regards
Bernd
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