Answer Posted / vishal

1> Macros are always expanded by pre-processor, whereas compiler may or may not replace the inline definitions. You cant force compiler to make a function inline. It is purely compiler based decision.

2> Debugging macros is also difficult.

3>  Expressions passed as arguments to inline functions are evaluated once. In some cases, expressions passed as arguments to macros can be evaluated more than once.

Here i got exact answer : http://www.firmcodes.com/difference-macro-inline-c/

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