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When box_car_volume is called with three integer variables as
arguments, a copy of the value of the first argument becomes the value
of the first parameter, h; a copy of the value of the second
argument becomes the value of the second parameter, w; and a copy of
the value of the third argument becomes the value of the third parameter,
l. Assuming, for example, that the value of the variable
height is 11, that the value of width is 9, and
that the value of length is 40, then the copying works like
this:
box_car_volume (height, width, length)
| | |
| | | Argument are evaluated
v v v |
11 9 40 <--------*
| | |
| | | Values are copied into memory
| | | reserved for parameters
h v w v l v |
*---* *---* *---* |
| | | | | | <--------*
*---* *---* *---*