How the inline differe from macro in C

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Question by bikram_bhatt
Submitted on 2/17/2004
Related FAQ: comp.lang.c Answers to Frequently Asked Questions (FAQ List)
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How the inline differe from macro in C

Answer by ambujbansal_cs
Submitted on 5/27/2004
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inline function support valid type of the argument passed to the function.and inline function sends a request to make it inline,it is up to the compiler whether it makes the function inline or not; depending on the better performance result.

Answer by manjudotg
Submitted on 5/26/2005
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Macros replace the string by replacement text Which falls the miss conception #define func(x) xx if the call is made as int i; func(++i) Then it would be replaced by ++i++i Which gives the wrong results But the inline function suits the best in such cases inline func(int n) { return n*n; }

Answer by vijay
Submitted on 6/28/2006
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1. macros are processed by the preprocessor while inline functions are processed by the compiler. 2. macros are marginally faster 3. The difference is in interpreting arguments. Arguments for inline functions are typed, therefore compiler can apply some type checking to that function calls. Macro isn't type checked and does not evaluate arguments, but simply takes the string passed to the macro and replace each occurence of macro argument in the text of macro with actual string for that parameter. It may give you sometimes very surpising results.

Answer by BHISMADEB PANDA
Submitted on 8/3/2006
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The major draback of macro is that it is not really a function, so the usual error cheking does not occur during compilation. But in c++ has a solution . C++ provides a keyword that is inline. an inline function is a function expanded in line when it is invoked. A function work as inline when it is small.

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