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2014-11-16T06:04:37+05:30

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Any commonly used constants can be predefined using the define preprocessor statement.

example:  in C or C++ and in some other languages:  

       #define N   10

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macros are not used to define constants.  macros are define preprocessor statements for definitions of functions with parameters. like in:

          #define  cube(x)    ( (x) * (x) * (x) )


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