What is the differece between #define and constant in C?

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Question :
What is the differece between #define and constant in C?

Category C Interview Questions

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Added on 7/18/2006

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Answers:

A const identifier allows a variable to be constant throughout the file in which it's declared....

Whereas a #define is a macro which replaces the macro-name with a user-defined text statement.....

Also,a macro can be deleted,if we wish,using #undef whereas a const variable once defined can't be done so....

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