Hi everyone, I am trying to create a CONSTANT or LITERAL in SAS macro language, i mean a variable that can not be changed during the execution of the programme. Macro Variables created with %let (global or local) can be changed... what i need is to define a variable that can not be changed (the classic example is the number pi=3,14151...). For instance, if I have constant1= 12345, if I writte in my programme %let constant1=789 the constant can not be changed. In C language it is used the #define function. Thank you!
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