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 then
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 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 then
else
end if;