John Mitchell <PICLIST@MITVMA.MIT.EDU> wrote:

> In C, and maybe assembly, a better phrase is the following:
>
>         if (020H != Buffer)

> That is, the constant is on the *left* hand side of a comparison.  If
> you slip, and write:
>
>         if (020H = Buffer)
>
> you'll get the the appropriate error from your compiler.

    Reordering the operands is also real helpful in "for" and
    "while" expressions, and around "&&" and "||" operations.

    It's also a good idea to ALWAYS use parentheses, so you don't get
    bitten by precedence/associativity bugs like Clyde's favorite:

        if (x & 0xF0 == 0x20)   //should be "if ((x & 0xf0) == 0x20)"

    or mine:

        *ip++    //almost certainly should be "(*ip)++"

    -Andy


=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - San Diego, California
=== http://www.geocities.com/SiliconValley/2499