EMPTYBOX

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EMPTYBOX is an example program (Listing 8-5) that appears on page 101 of the book "Pascal Primer" by David Fox and Mitchell Waite.

The program demonstrates how to pass an empty, unassigned pass-by-variable parameter (VAR Result:REAL) to a procedure, which will then populate the parameter and return a value back to the calling procedure.

The link command looks like:

LINKER V1.0
*D2:EMPTYBOX,FPLIB,PASLIB/S

When you run the program, it looks like: