Explain the symbolic constants in c language, C/C++ Programming

Assignment Help:

Explain the Symbolic Constants in c language?

Symbolic constants are the constants of any type that declared by using the #define compiler directive and it is a preprocessor directive. The Preprocessor' is a translation phase that is applied to your source code before the compiler proper gets its hands on it. Usually the preprocessor performs textual substitutions on your source code. Macro is a kind of preprocessor which replaces instances of one piece of text with another.

The preprocessor line shown below defines symbolic constant

#define name text

Defines the macro with the given name having as its value the given replacement text. Subsequent to that (for the rest of the current source file) wherever the preprocessor sees that name it will replace it with the replacement text.

Its general syntax is as shown below

#define ANGLE_MIN 0
#define ANGLE_MAX 360

It would define ANGLE_MIN and ANGLE_MAX to the values 0 and 360 respectively and C distinguishes between uppercase and lowercase letters in variable names and it is customary to use capital letters in defining symbolic constants.


Related Discussions:- Explain the symbolic constants in c language

Why php is also known as scripting language, Why PHP is also known as scrip...

Why PHP is also known as scripting language? PHP is fundamentally a general purpose language, which is used to write scripts. Scripts are normal computer files which comprises

Define classes and objects, Classes and Objects A class is a vehicle to...

Classes and Objects A class is a vehicle to execute the OOP features in the C++ language. Once a class is declared, an object of that type can be explained. An object is said t

Symbolic constant, S y m b o li c c o n s t a n t : c ...

S y m b o li c c o n s t a n t : c on s t m a x = 1 0 0 ; T h e d e f a u l t d a t a t y p e w i l l b e i n t e

What is some reward/drawback of using friend functions?, A: They present a ...

A: They present a degree of freedom in the interface design options. Member functions & friend functions are equally privileged (100% vested). The major difference is that a fri

.Change to palindrome, A palindrome is a string that reads the same from bo...

A palindrome is a string that reads the same from both the ends. Given a string S convert it to a palindrome by doing character replacement. Your task is to convert S to palindrome

Online tutor, Given an char variable last that has been initialized to a lo...

Given an char variable last that has been initialized to a lowercase letter, write a loop that displays all possible combinations of two letters in the range ''a'' through last. Th

Board coloring, in this problem you are given a board in which some of the ...

in this problem you are given a board in which some of the elements are placed as shown in below diagram.each element represent a color.fill the other element in the board,such tha

Word counting, Task Your task is to write a program, words, that reports i...

Task Your task is to write a program, words, that reports information about the number of words read from its standard input. For example, if the file qbf.txtcontains the text th

C assignment , 1. Create text a file with the name "myemail" that has a sin...

1. Create text a file with the name "myemail" that has a single line in it, consisting of your email address. Something like "[email protected]" (or your hotmail or gm

Calculation of mortgage interest rates, 1. When developing this project in ...

1. When developing this project in a Win32 Console Applications that includes the precompiled headers, enter in the Name: box, PRJ2[Your Full Last Name][Your First Initial] with no

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd