What precautions should be taken while using macros with arguments?

Question

Lot of confusion and lot of scattered info, can someone help me by providing to the point response.

Answer 1

You have to take care for operator precedence, if you are using macro with arguments.

Proper use of parentheses inside the macro definition will avoid trouble. For example:

#define Square(x) ((x)*(x))

and

 #define Square(x) x*x

This above two will give different result.

Comments

Thanks  Satyabrata. Adding Example.

If 1st one is used
#define Square(x) ((x)*(x))
then Square(2+2) ((2+2)*(2+2)) = 16

If 2nd one is used
#define Square(x) x*x
then Square(2+2) 2+2*2+2 = 8

The answer 8 is wrong.