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

Explain protected derivation, Protected derivation In addition to doing...

Protected derivation In addition to doing private and public derivations, you may also do a protected derivation. In this situation :   The private members inherited

Operator overloading, write aprogram in c++ to overload +,-,=,++ operator ...

write aprogram in c++ to overload +,-,=,++ operator using unary and friend function in a single program

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

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

Minimum Shelf, At a shop of marbles, packs of marbles are prepared. Packets...

At a shop of marbles, packs of marbles are prepared. Packets are named A, B, C, D, E …….. All packets are kept in a VERTICAL SHELF in random order. Any numbers of packets with thes

Call by reference, Call by reference: Arguments to a function can be pa...

Call by reference: Arguments to a function can be passed in two way; one by call by value and other by call by reference.  Call by value is passed either through a constant

Area under the curve, Write a program to find the area under the curve y ...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Program for implement vectors and iterators, - Write a program using vector...

- Write a program using vectors and iterators that allows a user to maintain a personal list of DVD titles. The user should be able to view all DVD titles in his library, add and d

Gross pay, Develop a C++ program that uses a while to determine the gross p...

Develop a C++ program that uses a while to determine the gross pay (in Dollars) for each of several employees. The company pays “straight-time” for the first 40 hours worked by eac

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