Keith Thompson posted:

> What warning does the cast inhibit?  I don't get a warning with or
> without the cast.  (I do get warnings on the literals, depending on
> command-line options.)  The cast specifies an explicit conversion;
> without it, there's still an implicit conversion.  There's no obvious
> reason why adding or removing the cast should affect whether there's a
> warning.


Most -- if not all -- C++ compilers warn about implicit conversions from wider
types to narrower types, e.g.:

(Let's pretend I initialise them first:

    float a; double b; a = b;
    int a; long b; a = b;
    char a; short b; a = b;


Warnings can be a right pain in the neck when it comes to C++ programming,
which is why I recently started a thread entitled "Deliberately Supress
Warnings" on this newsgroup.

Another common warning is arithmetic between signed and unsigned types.


--

Frederick Gotham

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