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;
}

Posted Date: 4/11/2012 8:22:03 PM | Location : United States

Ask an Expert

Related Discussions:- Linux Calculator in Java, Assignment Help, Ask Question on Linux Calculator in Java, Get Answer, Expert's Help, Linux Calculator in Java Discussions

Write discussion on Linux Calculator in Java
Your posts are moderated

Write your message here..

Related Questions

Digital logic design, encoder encoder

What is computer, how to use computer and how we can manage it how to use computer and how we can manage it

Operating System, variable partioning variable partioning

Circuit switching and , Circuit Switching: Many switching techniques a... Circuit Switching: Many switching techniques are in use. One of them is line or circuit switching in which a communications path is actually established before the message is

Fully describe the assessment centre method of selection, Problem: One ... Problem: One large employer requests CVs from applicants, and, on the basis of these, invites a selected number to take part in a telephone interview. A date and time are provi

Differentiate Preemptive and Nonpreemptive Scheduling?, The Scheduling algo... The Scheduling algorithms can be divided into two parts with respect to how they deal with clock interrupts. 1) Nonpreemptive Scheduling: A scheduling

Immediate addressing, These addressing modes are: With immediate addressing... These addressing modes are: With immediate addressing, no lookup of data is essentially required. The data is located in the operands of the instruction itself, not in a different

CAI, what is CAI? explain its pitfalls. what is CAI? explain its pitfalls.

Constant bit rate atm theory, For the connections that request a static amo... For the connections that request a static amount of bandwidth that is continuously available during the connection lifetime. Is intended to support real time applications requiring

Write short notes on joint fiction reserve, QUESTION (i) Write short no... QUESTION (i) Write short notes on each of the following: a) Shelf reading b) Joint Fiction Reserve c) London and South-Eastern Library Region d) Document access