User Account

All Pages

Linux Calculator in Java, Basic Computer Science

Assignment Help:
Hello,
Could you create a linux calculator using very basic java code (not complex, because I am a novice java coder). It should be called into the terminal for interaction.
Thank You!!
Here is the assignment:

I have a problem performing simple arithmetic operations. I need it to
perform addition, subtraction, multiplication, division, and exponentiation.
The program should read operations from standard input and/or from a file. If it reads from a file then the file will contain all of the operations and data. If the program reads from standard input then the program is interactive. It should be able to do both.
The program is to be called xcalc. It is to be run from the UNIX command line prompt. A sample execution is below.

$calc file l file 2
$calc < file 1
$calc
It will read from the standard input and write to the standard output with the capability of i/o redirection. I also want the program to have the command line option capability to specify an output file
Scale -O outputfilename inputfilenamel
The numbers read are to be unsigned integers and the operations are to be in prefix form. The operations are addition, subtraction, multiplication, division, and exponentiation.

The control d character (the UNIX end of file character) will end the program if it is interactive. The following sample list of operations should help clear up any confusion.

"+11 11"

"-22 11"
"*22 2"
"/22 2"

"e 2 3"


The operation must be the very first character on the input line followed by 1 or more blanks. Any number of blanks can be before or after each operand. No blanks can be embedded into a number. Sample execution and operation follows that illustrate interactive mode
$xcalc
>>+ 11 22
>>11 + 22 =33
>>*22 2
>>22 * 2 = 44
>>

There is one arithmetic operation that can be used to implement all others. Determine which one and use it to implement all of the operations: "+, -, *, /, and e." If you cannot determine which operation is the "one magical all powerful operation" then try using addition "+".
You should check for invalid operations and for division by zero.
This program is to be developed using the principles discussed in class
Each operation should be implemented as a function. See the example below.

int add (int augend, int addend)
{
int sum;
sum = augend + addend;

return sum;
}
If you cannot figure out how to use addition "+" then use the : "+, -, *, /, and e." in a straight forward manner.
int multiply (int multiplicand, int multiplier)
{
int product;
product = multiplicand * multiplier;

return product;
}

Related Discussions:- Linux Calculator in Java

CAI, explain CAI pitfalls

explain CAI pitfalls

Traditional business cycle, what is traditional business cycle

what is traditional business cycle

Explain web cache, To satisfy client needs through proxy server and not thr...

To satisfy client needs through proxy server and not through main server, as some other user have already accessed that file and its copied to the proxy server, so next time a user

C++ Programming, Help with MST algorithm

Help with MST algorithm

Pseudocode, How Much Insurance? Many financial experts advise that property...

How Much Insurance? Many financial experts advise that property owners should insure their homes or buildings for at least 80 percent of the amount it would cost to replace the st

Central processing unit, The Central Processing Unit : Central Processing U...

The Central Processing Unit : Central Processing Unit (CPU) is the brain of the computer. The intricate electronic circuitry of the CPU performs the computer's tasks of handling d

Definition of User-Level Thread?, User-level threads apply in user-level li...

User-level threads apply in user-level libraries, before via systems calls, so thread switching does not require to call operating system and to cause interrupt to the kernel. Actu

Development of personnel computer operating system, Development of Personne...

Development of Personnel Computer Operating System: The next important breakthrough in computer use occurred in 1982, with the introduction of the IBM personal computer. The I

Basic syntax of python language, The Python language has a lot of similarit...

The Python language has a lot of similarities to Perl, C and Java. Though, there are some specific differences between the languages. First Python Program: relative Mode Programmin

Data representations, explain data representation in details

explain data representation in details

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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