SIMSCRIPT II.5 Programming Language

Programming Language Concepts
substitute these 2 lines for ZZ
set VALUE = B
go to START
define SET to mean let
define B to mean X(1)*Y(1)+1
Program statement:
if VALUE is greater than 0 ZZ
Translation:
ZZ is translated to:
Compiled as:
set VALUE = B
go to START
set VALUE = B is translated to
let VALUE = B and then to
let VALUE = X(1)*Y(1)+1
if VALUE is greater than 0
let VALUE=X(1)*Y(1)+1
go to START
Certain words, such as statement key words, should be redefined with extreme caution. If, for example,
the word A is defined, as in the statement:
define A to mean X
and a define statement such as define LIST as a real array is processed, X will be substituted
for A, and will create the incorrect statement define LIST as X real array.
The effect of define to mean statements can be withdrawn by the statement:
suppress substitution
and reinstated by the statement:
resume substitution
These statements should be placed alone on program statement lines, because substitution takes
place for an entire line as it is read, and before the contents are interpreted. If other statements appear
on the same record as a suppress substitution statement, substitutions are made for
such statements (if called for) before the suppress command is recognized. To suppress substitution
for a particular word, the word itself is defined, as in the following example:
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