This is a Simple Calculator C$++2$program. I provided a screenshot of the instructions for this program. Read it carefully. The Code I'll provide with comments read them carefully with the corresponding code provided on the screenshot. SimpleCalc.cpp #include "SimpleCalc.h$"$

void SimpleCalc::Calculate$()$

$\{$

switch $($operation$)$

$\{$

case $\text{'}+\text{'}$:

answer $=$ operand$1+$ operand$2$;

desc $=$ "addition";

break;

case'$/\text{'}$:

$//$check to see if operand$2$ is $0$

if $($operand$2==0)$

$\{$

desc $="$No Division by $0!"$;

$\}$

else

$\{$

$//$regular division

desc $=$ "division";

$\}$

break;

default:

$//$handle an operation that is not acceptable

desc $=$ "That operation is not allowed. Please try again";

$\}$

$\}$

SimpleCalc::SimpleCalc$()$

$\{$

$\}$

void SimpleCalc::SetOperation$($char oper, double op$1,$ double op$2)$

$\{$

operation $=$ oper;

operand$1=$ op$1$;

operand$2=$ op$2$;

$//$check if operand$2=0$ and operation is division

$//$then set desc and don't even call calculate

Calculate$()$;

$\}$

string SimpleCalc::GetResults$()$

$\{$

$//$create a string that says "Your operation is addition: $5+7=12"$

$//$or "Your operation is division: $6/0$ Illegal Operation!

$//$check to see if the operation was illegal or if the operation was not

$//$a valid one. Then male a different desc

$//$return string$()$;

$\}$

Driver.cpp #include "SimpleCalc.h$"$

#include

bool DoAnother$()$;

using namespace std;

int main$()$

$\{$

$//$cout a course header

cout $$ "Welcome to Simple Calculator!";

$//$declare any varibale you need and create a SimpleCalc object

char ans$\{\text{'}$y$\text{'}\}$;

char op$\{\text{'}-\text{'}\}$;

double num$1\{0\mathrm{.}0\},$ num$2\{1\mathrm{.}0\}$;

string results;

SimpleCalc calc;

$//$start a play loop

do $\{$

$//$ask the user for the operation and the two operands

cout $$ "Please enter an operation$(+,-,/)"$;

cout $$ "Enter two operands: $"$;

cin $>>$ num$1>>$ num$2$;

$//$use the object to SetOperation

calc.SetOperation$($op$,$ num$1,$ num$2)$;

$//$call GetResults and show them

cout $$ calc.GetResults$()$;

$//$ask the user if they want to go again

cout Do you want to calculate another question? $($y$/$n$)$;

cin $>>$ ans;

$\}$ while $($DoAnother$())$;

$//$cout a goodbye

cout $$ "Thank you using Simple Calculator, Goodbye!";

return $0$;

$\}$

bool DoAnother$()$

$\{$

char ans$\{\text{'}$y$\text{'}\}$;

cout

Do you want to calculate another? $($y$/$n$)"$;

cin $>>$ ans;

$//$check

if $($ans $==\text{'}$y$\text{'})$

return true;

return false;

$\}$