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A constant can contain any data type value.
To assign a value to a constant
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Use the #DEFINE preprocessor directive.
In the following example, the constant TABLERR1 is defined as a character string.
| В |  Copy Code |
|---|---|
#DEFINE TABLERR1 "This table is not available. Please try later." | |
In an application, wherever you would normally specify the character string "This table is not available. Please try later." you can use TABLERR1 instead.
To release a defined constant
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Use the #UNDEFINE preprocessor directive.
В Copy Code#UNDEF TABLERR1