The following table is a set of statements and keywords that can be used in the script.

for (initialExpression; condition; updateExpression) {
    // instruction code
}

Example for if…else:

In this example, if A equals 1, assign 5 to A. If A equals 2, assign 10 to A. If A does not equal 1 or 2, assign 0 to A.

A = 1;
if (A == 1) {
    A = 5;
} else if (A == 2) {
    A = 10;
} else {
    A = 0;
}

Example for while:

In this example, 0 is set as the initial value for variable A. When A is less than 10, A will increment by 1 every execution until A equals 10. Once A equals 10, the while loop will end.

A = 0;
while (A < 10) {
    A = A + 1;
}

Example for do...while:

In this example, 0 is set as the initial value for variable A. The do statement will first be executed and increment A by 1 every execution until equal to 10. Once A equals 10, the do...while loop will end.

A = 0;
do {
    A = A + 1;
} while (A < 10);

Example for for

In this example,

In this statement, all expressions for the initialization, the decision-making, and the post-loop process are described in a single statement line.

The following example displays the WHILE statement example shown above but uses the FOR statement instead.

for (i = 1; i < 11; i = i + 1) {
    A = i;
}

The FOR statement is followed by the initialization statement, the decision-making statement, and the post-processing statement.

FOR (Initialization statement; Decision-Making statement; Post-Processing statement)

In the example above, the loop statement will be executed 10 times. On the first execution, A will have a value of 0. After this, the statement “A=A+1“ will execute, and the loop will run again. The loop will continue to run until A is equal to 10 or greater.

(4) SWITCH-CASE Statement

This statement is used when different processes are needed for different cases. Each case can be distinguished by an unlimited number of CASE statements.

The CASE keyword must be followed by a constant value and terminated with a colon “ : ”. Tags, variables, or expressions cannot be used in a CASE statement. Only one DEFAULT statement can be used in the SWITCH statement.

The DEFAULT statement does not need a constant. This statement is executed if none of the other cases are to be executed. The DEFAULT statement can be omitted if it is not needed.

The BREAK keyword plays the role of terminating the SWITCH statement. If there is no BREAK keyword after a CASE statement, then corresponding CASE/DEFAULT statements will also be executed. This means that multiple CASEs can execute the same result, as shown in the example below.

(5) CONTINUE Keyword

The CONTINUE keyword is used in loop statements. When the system meets the CONTINUE keyword, the flow skips the remainder of the loop and moves to the first part of the current loop. This keyword is often used in the WHILE, DO-WHILE, and FOR statements. It is especially useful when there are multiple decision-making statements (IF-ELSE) in the loop.

The following examples operate identically.

(6) RETURN Keyword

Every program returns a result value to the caller. The RETURN keyword is used for designating a return value and termination of the program.

The following example processes three input parameters and returns the sum of them to the caller.

The name of the program shown below is MyPgm.

The program MyPgm will be called in another program as shown below. Then the variable ‘RtnValue’ will receive the value ‘6’.

 (7) system.importScript Keyword

When you call an external program directly, the caller will be in standby mode until the called program (the external program) ends its operation.