What is macro? Explain it’s type with Example

Macro is a preprocessor directive that defines a piece of code that can be reused throughout your program.

Macros are defined using the #define directive and can be used to create constants, inline functions, or even to conditionally  include code.

Syntax: #define NAME value

Type : Two Type of macro

1) Object Macro.

2) Function Macro.

Object Macro:- It is widely used to represent numeric Constants. 

Example: #define PI 3.14 

Function-like Macros:
You can create macros that take arguments, similar to functions.

Example :#define SQUARE(x) ((x) * (x))

example: #define min((a,b) (a)<(b)?(a):(b))