Suppose you wanted to branch one way if b is 1, 7,
2037, or 5; and another way if otherwise. You could do it by:
if (b = 1)
or (b = 7) or (b
= 2037) or (b =
5) then
Statement1
else
Statement2;
|
But in this case, it would be simpler to list the numbers for which you
want Statement1 to execute. You would do this with a case
statement:
case b of
1,7,2037,5:
Statement1;
otherwise
Statement2
end;
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The general form of the case statement is:
case
selector
of
List1:
Statement1;
List2:
Statement2;
...
Listn:
Statementn;
otherwise Statement
end;
|
The otherwise part is optional. When available, it differs from
compiler to compiler. In many compilers, you use the word else
instead of otherwise.
selector is any variable of an ordinal data type. You may not use
reals!
Note that the lists must consist of literal values. That is, you must use
constants or hard-coded values -- you cannot use variables.
