About Macros

[sammy]

Are there any disadvantages because of using many macros in a C programming language? I want to know about that. Someone kindly provide a detailed explanation on this.

[rachelle]

Macros must be handled by programmers with great care only when needed. Some of the disadvantages are:
The ways in which macros are handled by preprocessors vary greatly from compiler to compiler.
The impossibility of including C directives within a macro.