What is a symbolic constant, Computer Engineering

Assignment Help:

What is a symbolic constant? How it is defined ?

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

A preprocessor line shown below defines symbolic constant

#define name text

It defines a macro with the given name, having as its value the given replacement text. After that (for the rest of the current source file), wherever the preprocessor sees that name, it will replace it with the replacement text.

 


Related Discussions:- What is a symbolic constant

Add references dialog box, What is the difference among "using System.Data;...

What is the difference among "using System.Data;" and directly adding the reference from "Add References Dialog Box"?  When you compile a program using command line, you add th

Explain bitwise left shift and right shift operators, Bitwise Left Shift an...

Bitwise Left Shift and Right Shift Operators: > shift-expression : additive-expression shift-expression > additive-expression The bitwise shift operators shift their

State the advantages of CMOS, State the advantages of CMOS. Ans. Su...

State the advantages of CMOS. Ans. Subsequent are the advantages of CMOS: Both n-channel and p-channel devices are fabricated on similar substrate. Low power di

Show the shared programming using library routines, Q. Show the Shared Prog...

Q. Show the Shared Programming Using Library Routines? The mainly well-liked of them is use of combo function known as fork() and join(). Fork() function is used to initialize

Programming languages array operations, Q. Programming languages array oper...

Q. Programming languages array operations? In programming languages array operations are written in compact form which frequently makes programs more understandable. Conside

The source to the current version, How do I update an existing copy of the ...

How do I update an existing copy of the source to the current version? Ans) As the common code changes, you might need to update your copy to have the lastest version. To do tha

Differentiate between linear and matrix addressing modes, Differentiate bet...

Differentiate between linear addressing and matrix addressing modes with examples. Ans: Linear Addressing: Addressing is the procedure of selecting one of the cells in a

Compatibility of sound cards, Q. Compatibility of Sound cards? Compati...

Q. Compatibility of Sound cards? Compatibility: Sound cards should be compatible at both software and hardware levels with industry standards.  Most software particularly gam

How do you create a permanent cookie, How do you create a permanent cookie?...

How do you create a permanent cookie?  By setting the expiry date of the cookie to a later on time (like 10 years later.)

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