Constant , Basic Computer Science

Assignment Help:

Constant:

In contrast to a variable, which is used as identifier for a value and which can change, constants are identifiers that are used for values, which cannot be changed. In other words constants are symbols used to refer to quantities which do not change throughout the life of a program. No assignment can be done to a constant.  A numeric constant stands for a number.  This number can be an integer, a decimal fraction, or a number in scientific (exponential) notation. Some of the operations which can be performed with numeric constants are addition, subtraction, multiplication, division and comparison.   A string constant consists of a sequence of characters enclosed in double/single quote marks. Chopping off some of the characters from the beginning or end, adding another string at the end (concatenation), copying are some of the operations that performed on the string constants. All these operations can be done on variables also.   


Related Discussions:- Constant

Define procedure of Building Assembler programs, In order to be able to mak...

In order to be able to make a program, quite a lot of tools are needed: Earliest an editor is used to create the source program. Next a compiler, which is nothing more than a progr

Processor, Processor: Processor plays major role in a computer. One sh...

Processor: Processor plays major role in a computer. One should carefully decide about the type of processor and its speed before making a choice. Currently Core 2 Duo process

Input and output device, Input and Output device: After having underst...

Input and Output device: After having understood the characteristics relating to CPU and storage media, let us try to learn about I/O aspects of a computer system. Input /outp

Dbms, Explain displaying an er schema as an er diagram, Database Management...

Explain displaying an er schema as an er diagram, Database Management System

Need of operating system, Need of operating system: What kind of facil...

Need of operating system: What kind of facilities operating system provides to the users and programs: The operating system provides interfaces for the user (keyboard, m

Information system and information technology, What is the difference betwe...

What is the difference between information technology and information systems? Describe some of the fuctions of information systems

Debugging, Debugging Once a program has been written, it has to ...

Debugging Once a program has been written, it has to be tested first to ensure that it is free of errors. It is very normal that any program written will contain mistake

Unix shell and history problem, UNIX Shell and History feature. 1.Creating ...

UNIX Shell and History feature. 1.Creating a child process. 2.Creating a history feature. Its exactly "programming project 1 - Unix Shell and History Feature (p.157-159)" in the Si

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