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Adds two numbers or concatenates two string expressions. Uses the plus sign (+) operator.
If one expression is empty, the other expression is returned unchanged.
result = expression1 + expression2
| Item | Description |
|---|---|
| result | Any numeric variable |
| expression1 | Any expression |
| expression2 | Any expression |
When you use the + operator, you may not be able to determine whether addition or string concatenation will occur. The expression determines the behavior of the + operator:
| If expression is: | Result |
|---|---|
| Both are numeric | Add |
| Both are strings | Concatenate |
| One is numeric and one is a string | Concatenate |
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