Challenge Task: Multi$-$Process Calculator

Congratulations on reaching the $7$th week of the semester! You've grown significantly in your understanding of operating systems concepts. Now it's time to flex those knowledge muscles and tackle a real$-$world challenge. Are you ready to put your skills to the test and create a multiprocess calculator? This task will bring together everything you've learned so far about process creation, signals, and pipes. Don't worry if it seems daunting at first $-$ remember, every great programmer started with small steps. Let's dive in and show what you can do$!$

Task Overview:

Create a program that implements a simple calculator using multiple processes and IPC mechanisms. The program should have a main process that forks three child processes, each responsible for a different operation: addition, subtraction, and multiplication.

Requirements:

$1.$ The main process should:

$-$ Fork three child processes.

$-$ Read two integers and an operation $(+,-,*)$ from the user.

$-$ Send the two integers to the appropriate child process using pipes.

$-$ Use signals to notify the child process to perform the calculation.

$-$ Receive and display the result from the child process.

$2.$ Each child process should:

$-$ Set up a signal handler to know when to perform the calculation.

$-$ Read the two integers from its pipe. a Perform the calculation when signaled.

a Send the result back to the parent through another pipe.

$3.$ Use SIGUSR$1$ for addition, SIGUSR$2$ for subtraction, and SIGCHLD for multiplication.

Skeleton Code:

Here's a skeletion code to help you get started:

$```$

Hinergata CxtEELa$-$in:

$|$xn$=1$ata Cxtal$1$is$.$n$3$

tinelaste Sandxtad. ns $\backslash$

tsme$1$gata cxtgmne$1.$n$*)$

tsn$=1$gatn cxyy$/$yant$\_$ns$)$

$```$

detipetran

$```$

wrald matbop$\_$ evisa $[\{$nt $\{$nalmx$)$;

mold perant procarx $[$pla t en$11$d plata$[])$;

$```$

$```$

Ant mastan $\{$

$```$

$```$

$77$ rago: Cragen ginat fax mach entrg

$```$

$```$

sat$\backslash$arn $[7$

$3$

rolal mattop$\_$ens$\mathrm{.}1$a$[[\{$nt inalnx$)$ i

$///$ rege: Gnt un ximgat handtar

I$/$ raOQ: clema unumed mina anda

$```$

$```$

$3$

wald parant$\_$prodaxx $[$p$1$a$\_$t eh$11$a$\_$padx $[])$ i$]$

$///$ range: Rmad ingue Sxas uxmx

$```$

$```$

$77$ ragos gigmal ehtld to senforn enleulntien

$``````$

$3$

walla hnme$11\_$xAgne$1[\{$nt xAgmon$)\{$

$```$

$```$

$3$

$```$

Sample Input$/$Output: The enild paoeaxa with DID: $1234$ will prowtda tha ramalt.

Ramalt: $13\backslash (\backslash$qquad $\backslash )$ The elilid proesex whth DID: $123$ will proutde the ramalt. $\backslash (\backslash$qquad $\backslash )$ Ramalts $13$ The ex$11$d proesux whth DIT: $1230$ will pxovide the momalt.

Ramalts $48$

Hints:

$-$ Use p$-$pe$(1)$ to create pipes for each child process.

$-$ Use a gnas $(3)$ to set up signal handiers in child procesocs.

$-$ Use ka$11()$ in the parent process to send signals to children.

$*$ Remember to close unused pipe ends in both parent and child processes.

$*$ Use zasa $()$ and wate $(1)$ for pipe communication.

Good luck! This challenge will test your understanding of both signals and pipes, as well as how they can be used together for comples inter$-$peocess communication.