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

Write this ARM assemble language program, Programming Assignment CS252 Spri...

Programming Assignment CS252 Spring 2014 Write an ARM assembly language subroutine that performs according to the following specification (Caesar cypher). Given a mixed case al

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

Summery, This is an article and I want great synopsis for the article

This is an article and I want great synopsis for the article

What is a Process and process mangemen in operating system? , A process is ...

A process is a chronological program in execution. The constituents of a process are the following: • The object program to be executed ( described the program text in UNIX) • Th

Browser cookies, Browser Cookies: A cookie is a small message sent by ...

Browser Cookies: A cookie is a small message sent by the Web server to a your web client. This message is stored by the browser as a text file. The basic purpose of cookie is

Traditional business cycle, what is traditional business cycle

what is traditional business cycle

Properties of Dictionary Keys, Dictionary values encompass no limitations. ...

Dictionary values encompass no limitations. They can be any random Python object, moreover standard objects or user-defined objects. Though, same is not true for the keys. There ar

Functioning of a computer , FUNCTIONING OF A COMPUTER: Computers have...

FUNCTIONING OF A COMPUTER: Computers have undergone through a long history of evolution. The evolutionary history is often divided into mechanical and electronic era, with ele

Register array, #queA register is a memory location surrounded by the CPU i...

#queA register is a memory location surrounded by the CPU itself, designed to be rapidly accessed for purposes of fast data retrieval. Processors normally hold a register array, wh

Design problem, Design Problem 1. Implement a basic file system managed fr...

Design Problem 1. Implement a basic file system managed from within a file. The file system should have the following capabilities: i. List files stored along with their sizes.

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