You are here: Statements and Functions > If...Then...Else
Syntax samples
IF <Boolean expression> THEN <statement 1> {ELSE <statement 2>}
IF Var1 = 5 THEN WAIT 2 min
IF (Attr2 = 5) OR (Var5 <> 0) THEN WAIT 2 min ELSE WAIT 3 min
IF Var1 > Attr2 THEN
BEGIN
Var1 = Attr2
WAIT Attr1
END
ELSE
BEGIN
INC Var1
WAIT Attr2
END
Executes a statement or statement block if the Boolean expression is true. If an ELSE statement is included and the Boolean expression is false, an alternate statement or statement block is executed. For an IF...THEN statement to be broken into more than one line, the first item on the next line must be THEN, AND, or OR. IF...THEN statements only apply to the next statement or statement block in a logic. Any statements outside of the BEGIN and END will execute normally. See BEGIN and END for examples.
Any logic.
Components
<Boolean expression>
The condition to be tested.
THEN <statement 1>
The statement or block to be executed if the condition is true.
ELSE <statement 2>
The statement or block to be executed if the condition is false.
Example
In the following example an IF...THEN...ELSE test is made to see if the simulation clock is less than eight hours. If so, the Client is routed to Office1, otherwise the Client is routed to Office2.
Process Table
|
Entity |
Location |
Operation (min) |
|---|---|---|
|
Client |
Loc1 |
IF CLOCK(Hr) < 8 THEN ROUTE 1 ELSE ROUTE 2 |
Routing Table
|
Blk |
Output |
Destination |
Rule |
Move Logic |
|---|---|---|---|---|
|
1 |
Client |
Office1 |
FIRST 1 |
MOVE FOR 5 |
|
2 |
Client |
Office2 |
FIRST 1 |
MOVE FOR 5 |
BEGIN, END, DO...WHILE, WHILE...DO, and DO...UNTIL.