The role of the VBS operator (+)

This article introduces the knowledge of "the role of VBS operator (+)". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Calculate the sum of two numbers.

Result = expression1 + expression2

Parameter result

Any numeric variable.

Expression1

Any expression.

Expression2

Any expression.

Description

Although you can also use the + operator to concatenate two strings, you should still use the & operator to concatenate strings to avoid confusion and provide easy-to-understand code.

This is because when using the + operator, it may not be possible to determine whether to do addition or string concatenation.

The basic subtype of the expression determines what the + operator does, as shown in the following table:

If both expressions are numeric plus two expressions are string concatenation one expression is numeric and the other is string addition

If one or both expressions are Null expressions, result is Null. If both expressions are Empty, result is the Integer subtype. But if one expression is Empty, another expression is returned as result.

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