What are the difference between function and sub procedures in VBScript?
Difference Between Sub Procedure and Function Procedure Sub Procedure never takes an input while Function Procedure may take an input if required. Sub Procedure starts and ends with using Sub and End Sub respectively while Function Procedure starts and ends with Function and End Function respectively.
What is procedure how many types of procedures supported by VB?
Visual Basic uses several types of procedures: Sub Procedures perform actions but do not return a value to the calling code. Event-handling procedures are Sub procedures that execute in response to an event raised by user action or by an occurrence in a program. Function Procedures return a value to the calling code.
How do you call a function in VBScript?
You call a Function procedure using the function name, followed by the argument list in parentheses, in an expression.
How do you create a function in VBScript?
The most common way to define a function in VBScript is by using the Function keyword, followed by a unique function name and it may or may not carry a list of parameters and a statement with an End Function keyword, which indicates the end of the function.
What is the difference between procedure and Sub procedure?
In programming languages Functions and Procedure are the code segments written separately to take advantage of reusability. The Sub procedure performs a task and then returns control to the calling code, but it does not return a value to the calling code.
What is a main procedure?
A main procedure is a procedure that can be specified as the program entry procedure (and so receive control when an ILE program is first called). A subprocedure is a procedure that is specified after the main source section.
What is Function procedure in VB?
A Function procedure is a series of Visual Basic statements enclosed by the Function and End Function statements. The Function procedure performs a task and then returns control to the calling code. When it returns control, it also returns a value to the calling code.
How are procedures invoked?
Explanation: Unlike functions, procedures are invoked as a statement. Explanation: Procedures usually returns many values, which is not possible with the case of function. So, procedures are useful when there are multiple results coming from the procedure. Note that procedure can return single value as well.
How do you do an addition in VBScript?
The underlying type of the expressions specifies the behavior of the + operator in the following way: – if both expressions are numeric, then addition. – if both expressions are strings, then Concatenate. – if one expression is numeric and the other is a string, then Add.
What are the benefits of using a sub procedure?
Sub procedures help to make programs smaller and seamless to manage. A sub procedure begins with a Sub keyword and ends with an End Sub keyword. The parameter is a certain data that is passed into the sub procedure to perform a specified task.
How do you use function procedures in VBScript?
Function procedures start and end with Function and End Function statements respectively. A function procedure may or may not take input. Function procedures return a value by assigning the value to its name. You can pass VBScript arguments to the procedures by reference or by value.
What is an example of a VBScript function?
A block of code that processes an input or handles a file is a good example of a function. There are two types of procedures in VBScript. Sub procedure: The sub-procedure does not return a value. Function procedure: The function procedure is used if you want to return a value.
What are the different types of VBS procedures?
There are two types of VBS procedures: Sub procedures and Function procedures. If you want to execute a series of statements without returning any value, then you can use sub procedures. If you want to execute a series of statements and return a value, then you need to use function procedures.
How do you return a value from a VBScript function?
Function procedures return a value by assigning the value to its name. You can pass VBScript arguments to the procedures by reference or by value. If you do not specify anything when you call a procedure, then the argument/arguments are passed by reference by default.