5 differences between a macro and pre-processor?

sheena rewari

could you please tell me 5 difference between a macro and pre-processor??😀

sheena rewari

could you please tell me 5 difference between a macro and pre-processor??😀

Difference between preprocessor and macro

Preprocessor is the program that does the preprocessing like file inclusion,compilation, macro expansion. So that means lines that start with # are preprocessing directives. They are directives that tell the preprocessor to do something.

examples are - #include <header_name>

or #if <value>

macros are name for fragment of code. 

e.g #define buffer_size 100

Here whenever yuo use macro buffer_size it will get replaced by value 100

A macro processor is a program that copies a stream of text from one place to another, making a systematic set of replacements as it does so. ... A preprocessor is a program that processes its input data to produce output that is used as input to another program.Macro: a word defined by the #definepreprocessor directive that evaluates to some other expression.Preprocessor directive: a special #-keyword, recognized by the preprocessor. preprocessor modifies the source file before handing it over the compiler. Consider preprocessor a program that runs beforecompiler.