Difference between macro define functions and inline functions

[tekdev]

Hi to All
one way to declare function is macro
forexample
#define sqr(x) (x*x)

and other way is to make function inline in both cases, processor will replace the call by actual body of the function before compile and than process the code.
Now I want to know what the difference between in these two declaration.

tnx in advance
tekdev

 

[Zyrenthian]

WHat you said is true but the issue comes in when you do looping/recursion in an inline function. I would not want my fibonacci sequence to be inlined

Matt

 

[lionelhill]

Zyrenthian,
thanks! Could you explain a little more, though? I can't really see how a recursive function could be inlined or macrod, since every time the compiler hits the call to the recursive function it will start writing a new instance of the code... ad infinitum. How do macros and inlines differ in this (or don't I have to worry about it anyway)??
Thanks

 

[isaisa]

hi,

i think inlining a function in 'C' is not supported. That support is with 'C++' compiler.

Secondly even if the function is inline, the inlining is done at the time of compilation unlike the #define macro where the text replacement is done before compilation.

sanjay