macro Vs inline

The C/C++ style, macros without arguments should look like variable or other identifiers, macros with arguments should look like function calls. 

so any difference between macro and inline?

#define SQUARE(x) ((x)*(x))

inline int square( int x) { return x*x;}

macro may not work properly if the actually argument is an expression with side efforts, for example:

SQUARE(i++)

The inline is newly added to C standard from C99, the previous C compiler might not support it

inline checks type of argument and does conversion, it might not work properly sometimes.for example:

double f = square(1.5);

and in C++, we can use template for avoid this issue, like 

inline const _T square_t(_T x) { return x*x;}