#include

#include

#include

using namespace std;

int main$()\{$

double Us$\_$Dollars;

string Foreign$\_$Currency;

$//$ask how much you want

cout $$ "how much currency would you like to convert? $"$;

cin $>>$ Us$\_$Dollars;

$//$giving exampples

cout $$ "whats the abbreviation for the currency you want to convert to$?"$ endl;

cout $$ "like this" $$ endl;

cout tBRL$\backslash$t$\backslash$tBrazilian Real

$"$;

cout tEUR$\backslash$t$\backslash$tEuro

$"$;

cout tMXN$\backslash$t$\backslash$tMexican Peso

$"$ endl;

cout $$ "Please use all uppercase for your abbreviations! $"$;

cin $>>$ Foreign$\_$Currency;

$//$opening rates file

ifstream input$("$rates$.$txt$")$;

if$(!$input.is$\_$open$())\{$

cout $$ "Cant open rates.txt file";

return $1$;

$\}$

string Currency$\_$Type;

double Exchange$\_$Rate;

$//$match currency type

bool matched $=$ false;

while $($input$.$eof$()$ && $!$matched$)\{$

input $>>$ Currency$\_$Type $>>$ Exchange$\_$Rate;

if $($Currency$\_$Type $==$ Foreign$\_$Currency$)\{$

matched $=$ true;

$\}$

$\}$

if $($matched$)\{$

const int WIDTH $=15$;

cout $$ left $$ fixed $$ setprecision$(2)$;

cout $$ setw$($WIDTHUs$\_$Dollars" $$ Foreign$\_$Currency $$ endl;

$\}$else

cout We cannot covert to that currency yet";

input.close$()$;

return $0$;

$\}$

This lab provides more practice with files, stream manipulators, functions, and array$-$related

tasks.

You shall create a program to process a file of currency exchange transactions from different

foreign currencies to US Dollars. Each line of the "transactions.csv$"$ file represents one

exchange transaction using the following format:

currency$\_$abbreviation, currency$\_$name, amount

For example, the following sample "transactions.csv$"$ file contains four transactions. The first

one requests to exchange $150$ Canadian Dollars to US Dollars. The second one requests to

exchange $125$ Brazilian Real to US Dollars. And so on$.$ Not all currencies in the

"transactions.csv$"$ file have their matching exchange rates in the "rates.txt$"$ file.

CAD, Canadian Dollar, $150$

BRL$,$Brazilian Real, $125$

MXN$,$ Mexican Peso, $350$

CUP, Cuban Peso, $199$

Your program shall process the transactions and display the results in a nice columned format

using parametric parameters, as illustrated in the following sample output. You don't need to

match the exact number of spaces for each column. But there needs to be $2$ digits after the

decimal space for each currency amount.

The following two function prototypes have been created in the "library. $h"$ file. You are require

to implement these two functions in the "library.cpp$"$ file and call these functions in the main

function.

double find$\_$rate$($string abbreviation$)$;

This function is to take the abbreviation of a currency and look up the "rates.txt$"$ file to return

the corresponding exchange rate. The function shall return $0$ if no matching currency is found.

Note that the "rates.txt$"$ file stores the exchange rates from US dollars to different foreign

currencies.

void convert$($double foreign, double rate, double& dollars$)$;

This function is to calculate and store the resulting US dollar amount in the third parameter

using the values of the first two parameters.

When you are ready to submit your work, capture the screenshot of the sample run of your

program. Upload the screenshot to your

Repl.it project. The lab instructor may ask you to

explain your problem$-$solving process and the code. When evaluating your code on

Repl.it$,$ the

lab instructor may modify the content of the "rates.txt$"$ and "transactions.csv$"$ file.

$///$Library$.$cpp file

#include

#include

#include

#include

#include "library.h$"$

using namespace std;

double find$\_$rate$($string abbreviation$)$;

double convert$($double amount, string abbreviation$\_$from, string abbreviation$\_$to$)$;

$//$ Implement the functions here

double find$\_$rate$($string abbreviation$)\{$

double rate;

if$($abbreviation $==$ "USD"$)$

rate $=1\mathrm{.}0$;

else if$($abbreviation $==$ "EUR"$)$

rate $=0\mathrm{.}89$;

else if$($abbreviation $=="$BRL$")$

rate $=5\mathrm{.}05$;

else if$($abbreviation $=="$MXN$")$

rate $=22\mathrm{.}26$;

else if$($abbreviation $==$ "ARS"$)$

rate $=69\mathrm{.}38$;

else if$($abbreviation $=="$HKD$")$

rate $=7\mathrm{.}75$;

else if$($abbreviation $==$ "COP"$)$

rate $=3776\mathrm{.}50$;

else if$($abbreviation $==$ "RUB"$)$

rate $=69\mathrm{.}74$;

else$\{$

rate $=-1$;

$\}$

return rate;

$\}$

$///$library$.$h I have so far

#include

using namespace std;

$/*$

This function takes one parameter as the currency abbreviation. It shall use currency abbreviation to search up the "rates.txt$"$ file and return the corresponding exchange rate. If the currency abbreviation does not match any of those in rates.txt$,$ the function shall return $0.$

$*/$

double find$\_$rate$($string abbreviation$)$;

$/*$

This function takes three parameters.

The first one is the amount of US Dollars.

The second one is the exchange rate from US Dollar to a foreign currency.

The third one is the corresponding amount of foreign$\_$currency that would be determined by the function.

$*/$

void convert$($double dollars, do