Rice Lake iRite IDE - Manual (Page 27)

920i Programming Reference - Language Syntax 23 To be the best by every measure
end;
begin
Write(g_ciPrinterPort, "Before function call: ");
PrintGlobalString;
SetGlobalString(g_sString);
Write(g_ciPrinterPort, "After function call: ");
PrintGlobalString;
end GlobalAsVar;
When run, the program prints the following:
Before function call: Initialized, not changed yet
In function call: Initialized, not changed yet
After function call: String has been changed
3.4.3 If Statement
optional-elsif-list
IF
END
expr THEN
optional-else-part
IF
stmt-list
;
Figure 3-12. If Statement Syntax
The if statement is one of the programmer’s most useful tools. The if statement is used to force the program to
execute different paths based on a decision. In its simplest form, the if statement looks like this:
if <expression> then
<statement list>
end if;
The decision is made after evaluating the expression. The expression is most often a “conditional expression”. If
the expression evaluates to true, then the statements in <statement list> are executed. This form of the if
statement is used primarily when you only want to do something if a certain condition is true. Here is an
example:
if iStrikes = 3 then
sResponse := "You’re out!";
end if;
stmt-list ELSE
Figure 3-13. Optional Else Statement Syntax
Another form of the if statement, known as the if-else statement has the general form:
if <expression> then
<statement list 1>
else
<statement list 2>
end if;