Bob Paddock ha scritto:
The "falls out" is the issue with me, as I see the {} as being "contained
within",
the "}" was never crossed, so to me it was still the same {} block. I could not
find this "reinitialize" issue in my old K&R book?
The condition of the loop must me somehow checked. When you reach the
"}", the execution crosses braces boundary and jumps to the check of for
loop condition. If you write:
for (;;)
{
...
}
the condition is not well visible, as it has been omitted, but think if
you write:
for (i = 0; i < 10; i++)
{
...
}
when the execution reaches the "}", jumps to:
i < 10
and if the condition is true the block is re-executed from the
beginning. So variables declared inside the block die and reborn at
every round.
You can see very well this behavior with a step-by-step debugger
execution: when executing a loop, if you reach the block end, the
execution jumps to the line containing the loop condition, crossing
braces boundary.
--
_|/ Francesco Sacchi - Develer S.r.l., R&D dept.
|\ http://www.develer.com/
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