Macros and Macro Pre-processors Quiz

A macro is a unit of specification for program generation through expansion. It consists of a name, a set of formal parameters, and a body of code. The macro name with a set of actual parameters is replaced by code generated from its body, known as macro expansion.

The two types of macro expansion are Lexical Expansion and Syntactic Expansion. Lexical Expansion implies the replacement of characters, while Syntactic Expansion involves replacing the structure of the input.

Positional parameters are used to specify the order of arguments in the macro call, while keyword parameters are used to explicitly specify which formal parameter is to be replaced by a particular actual parameter. Example: Positional parameters - MacroAdd(A, B), Keyword parameters - MacroPrint(name='John', age=25).

<p>Nested macro calls allow the body of one macro to contain another macro call. This enables the creation of more complex and reusable code structures. Example: MacroA calls MacroB, and MacroB is defined to call MacroC, allowing for a hierarchical and modular approach to program generation.</p> Signup and view all the answers

<p>Macro expansion involves replacing the macro name with a set of actual parameters with the code generated from its body. The macro preprocessor is responsible for processing macro definitions and expansions, maintaining data structures, and overseeing the overall design of the macro expansion process.</p> Signup and view all the answers