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Addition (+) - operator of language VBScript

Used to sum two numbers.
result = expression1 + expression2
Although you can also use the + operator to concatenate two character strings, you should use the Concatenation (&) operator for concatenation to eliminate ambiguity and provide self-documenting script. When you use the + operator, you may not be able to determine whether addition or string concatenation will occur. The underlying type of the expressions specifies the behavior of the + operator as follows:
- 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.
PROMOTIC 9.0.28 SCADA system documentation MICROSYS, spol. s r.o.

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