On 10/12/06, Gerhard Fiedler <lists@connectionbrazil.com> wrote:
>
> ----- quote -----
>
>  6.5.3  The for statement                                    [stmt.for]
>
> 1 The for statement
>          for ( for-init-statement conditionopt ; expressionopt ) statement
>  is equivalent to
>
>          {
>                  for-init-statement
>                  while ( condition ) {
>                          statement
>                          expression ;
>                  }
>          }
>  except  that  names declared in the for-init-statement are in the same
>  declarative-region as those declared in the condition, and except that
>  a  continue in statement (not enclosed in another iteration statement)
>  will execute expression before re-evaluating condition.   [Note:  Thus
>  the  first statement specifies initialization for the loop; the condi-
>  tion (_stmt.select_) specifies a test,  made  before  each  iteration,
>  such  that  the  loop  is exited when the condition becomes false; the
>  expression often specifies incrementing that is done after each itera-
>  tion.  ]
>
> 2 Either  or both of the condition and the expression can be omitted.  A
>  missing  condition  makes  the  implied  while  clause  equivalent  to
>  while(true).
>
> 3 If  the  for-init-statement is a declaration, the scope of the name(s)
>  declared extends to the end of the for-statement.  [Example:
>          int i = 42;
>          int a[10];
>
>          for (int i = 0; i < 10; i++)
>                  a[i] = i;
>
>          int j = i;        // j = 42
>   --end example]
>
> ----- end quote -----
>
>
> Some VC++ background on this issue: http://vcfaq.mvps.org/lang/1.htm
>
> There is probably a compiler switch that allows selecting one or the other
> interpretation.

Yes, /Zc:forScope or something like that... going to have to add it to
my old projects at work as we upgrade so we'll at least get a warning.

Orin.
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