Answered: Briefly explain macro

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Briefly explain macro

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Macro:

Macro is a programmable pattern that is used to define the constant values so that they can be throughout the program repeatedly.
The macros can also accept arguments and hence they are called function-type macros.
They refer to the name given to a value (or a segment of code). Whenever that name is used in a program, it will be replaced by the value of that macro.
It is usually a one-line statement that appears at the beginning of the program.
Macros are defined in the program using the #define preprocessor directive which precedes by valid identifier name and value as a numeric or string that must be substituted by the preprocessor whenever that macro encounters in the program.

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