Content Comparison

You can control the flow of script execution by using the following types of statements to manage the order in which operations are executed:

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Use conditional statements (if, else, else if, switch)

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IF statements

The IF statement works as follows: if the test condition is true, the statement is executed.

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if ( 2 < 3 )
 {
 string $blah = "This worked";
 print ($blah);
 }

ELSE statements

The ELSE statement always follows the IF statement. The ELSE statement is executed when the preceding IF statement is false.

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ELSE IF statements

The ELSE IF statement is always paired with the IF conditional statement. Unlike the else command which executes a statement when the IF statement is false, the ELSE IF statement requires another test condition to be true, or it will not execute either statement.

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SWITCH statements

The switch statement is a conditional statement that executes a code block depending on which one of a number of given cases is matched to the switch expression.

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WHILE statements

A WHILE looping statement continuously executes designated statements as long as a specific condition remains true.

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DO WHILE statements

A DO WHILE looping statement executes a specific statement then checks whether or not to repeat the loop. This ensures that the statement is executed at least once.

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int $peanuts = 1;
 do {
 print ("Elephants work for peanuts");
 $peanuts += 1;
 print ($peanuts);
 }
 while ( $peanuts < 10);

FOR statements

A FOR looping statement provides loop control that has initialization, test, and an increment statement.

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// Courtesy of Jake Wilson of SCEA
// Initialize Variables
print " ";  
// Create array of children under 'Actor' Mary's character node
string $childarray[] = `getChildren Mary`;    
// Determine # of children
int $childcount = `getCount $childarray`;  
// Create a $childarrayloop to hold a number 
int $childarrayloop = 0;  
// Print an empty string
   string $ proptest;
// Start a loop which run once for each of Mary's children
for ( $childarrayloop=0 ;
 $childarrayloop < $childcount ;
 $childarrayloop +=1 ){
    // print name of current child marker in array   
    print ( string ($ childarray[$childarrayloop] ) );
    // return the name of the marker and compare the name 
    // of the marker to the name"LFWT"
    $ proptest = ` getStringProperty $ childarray[$childarrayloop] Name`; 
    if ($ proptest==LKNE){
        // if that LFWT marker is found, this tells the loop to quit
        $ childarrayloop=$childcount; 
        print ( "EXITING LOOP" );
        }
    }

Use interruption statements (break)

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