What are inline functions in C and how could it be used?

[agg_mayur]

Hi All,
Please tell me what are inline functions in C language and they boost up the spped of code?
If i declare a macro like this:
#define SUM a+b
then what will be the type of 'a' and 'b'? How compiler judge the data type of variables written in Macro.
Can i declare the variables as int,float, etc... in macro definition.

 

[Windmiller]

Hello!

Hi All,
Please tell me what are inline functions in C language and they boost up the spped of code?

First, inline functions.. The compiler will insert the body of this function at every place the function is used, which saves the time required execute a function call.

If i declare a macro like this:
#define SUM a+b
then what will be the type of 'a' and 'b'? How compiler judge the data type of variables written in Macro.
Can i declare the variables as int,float, etc... in macro definition.

You can't declare as int, float etc in a macro. And the compiler doesn't judge anything, it will just paste a and b into the macro which will be the type of that variable being pasted. Macro is dangerous to use sometimes just because of that, can have unexpected results.

Regards

/ Morgan