As you asked, you can declare a variable on the top line of the brace, and if you leave the area, you can no longer use the identifier It may look similar to a stack to a programmer's
C's brace ({
{
}
) is not a stack frame, but naming scope
), so entering the brace does not push/pop into the stack.
The code you asked is theoretically an array d
holds memory throughout the foo
function.
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