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From: David Brown <david.brown@hesbynett.no>
Newsgroups: comp.programming
Subject: Re: Here is why C++ and C are bad...
Date: Wed, 30 Dec 2015 18:17:23 +0100
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On 30/12/15 17:32, Ben Bacarisse wrote:
> David Brown <david.brown@hesbynett.no> writes:
> 
>> On 30/12/15 14:28, Richard Heathfield wrote:
> <snip>
>>>   int i = -6;
>>>   unsigned int j = 42;
>>>   if(i < j)
>>>   {
>>>     puts("-6 is less than 42");
>>>   }
> <snip>
>> Of course, this in itself is just a specialist case of the difference
>> between "normal" mathematics and numbers in C.  Replace the first two
>> lines with "int16_t i = 1000000; int16_t j = 4000000;" and you'll find
>> that four million is apparently smaller than one million.
> 
> You might find that, but you also might not!  There is a conversion
> which is implementation-defined (and might even raise a signal).
> 

Absolutely - which is why you always have to be careful with arithmetic
in C.