SIMSCRIPT II.5 Programming Language

SIMSCRIPT II.5 Programming Language
To title all pages of output on the foregoing example, the program can be written as:
begin report
begin heading
print 1 line as follows
I X(I)
end '' HEADING SECTION
for I = 1 TO N,
print 1 line with I, X(I) as follows
** **.***
end '' REPORT SECTION
The statements in a heading section are executed the first time they are encountered and thereafter
every time a page is changed. Pages are changed whenever the current line count exceeds the number
of printed lines a page can contain. Two system-defined variables line.v and lines.v, maintained
for each logical output unit, hold the values of the current line count and the permitted
number of lines per page, respectively. Line.v is initialized to 1 when an output device is first
used. It is stepped from 1 to the current maximum value, specified by lines.v, each time a new
line is printed. You may change lines.v at any time to vary the number of lines that may appear
on each output page. The SIMSCRIPT II.5 system usually sets lines.v = 55 for the default
output unit, and for units selected for print output, at the start of program execution. This may vary
on different SIMSCRIPT II.5 implementations.
Pages are numbered sequentially, starting from 1, with the number of the page currently being written
contained in a system variable page.v. As with line.v, a separate count of page.v is kept
for each output device. Page.v may be reset at any time. When this is done, numbering continues
in sequence from the new value. Page.v and line.v always refer to the current output unit. A
unit should be selected with a use statement before any explicit reference to these variables.
Page changing can be disabled at any time by setting lines.v = 0.
Within a heading section, the statement:
if page is first
may be used to select statements to be executed only on the first page of a report section's output.
The following program illustrates one way of using the report facilities described thus far.
126