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[c++] symbolic constants
I'm having trouble figuring out how to represent the value of pi in two different ways using symbolic constants. The book is giving me no useful info. Could I get some help? Thanks.
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Symbolic constants are just defines.
So #define PI 3.14 is one way to represent PI |
hey thanks. Could I also do something like: Const PI = 3.14 as the second way. Or can I just do #define PI 3.1415?
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#define PI 3.1415 is the same method as #define PI 3.14 and Const PI = 3.14 wouldn't be a symbolic constant. Think about what #define does. It replaces the token PI in the source code with the number 3.14 before the code is compiled. Using this idea, a #define could be more than a number...
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Keep in mind though that if you are using the term const, you need a type, it would be
const double PI = 3.14 |
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