Question: it to the standard output. For each statement, the first line should display the person's name. The following lines should list the objects they purchased along with the amount paid for each object (one object per line). Finally, the last line should print "Total: value", where value is the sum of all payments. For example, for the given inputs

$itto$ the standard output. For each statement, the first line should display the person's name. The following lines should list the objects they purchased along with the amount paid for each object $(one$ object per line$).$ Finally, the last line should print "Total: value", where value $is$ the sum $of$ all payments. For example, for the given inputs $(payments.txt$ and people.$txt),it$ should print:

Bob

eggs $2\mathrm{.}5$

pen $3\mathrm{.}5$

Total: $6$

Alice

apple $1\mathrm{.}5$

eggs $2$

Total: $3\mathrm{.}5$

Your program should validate the structure $of$ the input files and display $an$ appropriate error message $if$ any issues are found. For example, $if$ people.$txtis$ empty, $it$ should print a message such $as$: 'The people.$txt$ file $is$ empty.$\text{'}$ Similarly, $if$ a line $is$ missing $an$ item, $orif$ the payment $is$ not a valid integer $or$ floating$-$point number, the program should generate $an$ error message. For instance, $if$ payments $.txt$ contains a line like this:

Alice $2\mathrm{.}5$

$Orifwe$ have something like this:

Alice pen two

$It$ should generate $an$ appropriate error message. $We$ assume there are $no$ empty lines between the data, all people's names start with a capital letter, and all other letters $(for$ both names and objects$)$ are lowercase. Additionally, $we$ assume that a single space separates names and payments. Finally, the numbers $in$ payments $.txt$ are assumed $to$ have $at$ most two digits after the decimal point. Therefore, you $do$ not need $to$ validate these aspects.

Please follow this format precisely, with $no$ additional output, $as$ I will $be$ running your programs through automated tests. The tests will use $my$ own files payments.$txt$ and people.$txt$ with the same format $as$ the above examples, but may involve different data.

Your solution should make appropriate use $ofat$ least one class and $at$ least one container.

Coursework

There $is$ a single coursework $in$ this module, counting for $30\%of$ the overall module mark.

This coursework $is$ due $at5pmon$ Sunday $1^{st}$ December. $As$ with all modules, this deadline $is$

hard. $(See$ "Submission" below for the procedure for applying for extensions.$)$

This coursework simulates a simple database operation, and provides practice with classes

and standard containers. $It$ does not require any features covered after session $6.$

Description

The file payments.$txt$ contains a simple textual table. Each line lists three pieces $of$

information: a person's name, $an$ object name, and the price $of$ the object purchased $by$ the person,

separated $by$ one space, $e.g.$:

Bob eggs $2\mathrm{.}5$

Alice apple $1\mathrm{.}5$

Ava pen $2$

Bob pen $3\mathrm{.}5$

Alice eggs $2$

$(The$ meaning $of$ the units depends $on$ the objects, and need not concern $us.)$ You may assume that

person and object names $do$ not contain spaces. The records are not $in$ any special order. You may

assume that any combination $of$ person and object $(e.g.$ Bob eggs$)$ occurs $at$ most once.

$To$ read this file, you will need $to$ use the class ifstream, which $is$ derived from istream,

like $so$:

#include $itto$ the standard output. For each statement, the first line should display the person's name. The

following lines should list the objects they purchased along with the amount paid for each object

$(one$ object per line$).$ Finally, the last line should print "Total: value", where value $is$ the

sum $of$ all payments. For example, for the given inputs $(payments.txt$ and people.$txt),$

$it$ should print:

Bob

eggs $2\mathrm{.}5$

pen $3\mathrm{.}5$

Total: $6$

Alice

apple $1\mathrm{.}5$

eggs $2$

Total: $3\mathrm{.}5$

Your program should validate the structure $of$ the input files and display $an$ appropriate error

message $if$ any issues are found. For example, $if$ people.$txtis$ empty, $it$ should print $a$

message such $as$: 'The people.$txt$ file $is$ empty.$\text{'}$ Similarly, $if$ a line $is$ missing $an$

item, $orif$ the payment $is$ not a valid integer $or$ floating$-$point number, the program should

generate $an$ error message. For instance, $if$ payments $.txt$ contains a line like this:

Alice $2\mathrm{.}5$

$Orifwe$ have something like this:

Alice pen two

$It$ should generate $an$ appropriate error message. $We$ assume there are $no$ empty lines between

the data, all people's names start with a capital letter, and all other letters $(for$ both names and

objects$)$ are lowercase. Additionally, $we$ assume that a single space separates names and

payments. Finally, the numbers $in$ payments $.txt$ are assumed $to$ have $at$ most two digits after

the decimal point. Therefore, you $do$ not need $to$ validate these aspects.

Please follow this format precisely, with $no$ additional output, $as$ I will $be$ running your pro$-$

grams through automated tests. The tests will use $my$ own files payments.$txt$ and

people.$txt$ with the same format $as$ the above examples, but may involve different data.

Your solution should make appropriate use $ofat$ least one class and $at$ least one container.

can you please provde $an$ exact code solution and detailed steps with expleantions

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