Assignment purpose: simple i$/$o in $C++,$ simple math in $C++,$ simple loop, data types string, double, and int, formatting

output in $C++,$ predefined functions, programmer defined functions, call by reference and call by value.

Write a program that will calculate the area and perimeter of a triangle and the area and perimeter of a rectangle

The user should be able to continue to the calculate either the area and perimeter of a triangle OR the area and

perimeter$/$circumference of a circle until they enter a $"$Q$"$ or $"$q$"$ to QUIT

You must use the main function provided

YOU MAY NOT MAKE ANY MODIFICATIONS TO THE MAIN FUNCTION

You will implement the following void functions:

MenuChoices

ProcessChoice

You may add other programmer defined functions as needed

Example addition functions for the triangle and circle area and perimeter$/$circumference calculations

Use function prototypes $($above the main function$)$ and function definitions $($below the main function$)$

BE SURE TO ADD COMMENTS TO THE FUNCTION PROTOTYPES

pre and post conditions and a brief description

BE SURE TO ADD COMMENTS TO THE FUNCTION DEFINITIONS

brief description

Here is the main function:

const double PI $=3\mathrm{.}14$;

$//$Declaration$/$ Prototypes for your functions will go here

$//$Add pre and post conditions and a brief description

int main$()$

$\{$

double area $=0\mathrm{.}0$;

double perimeter;

string quit;

string nane;

cout $$ "Welcome to the area and perimeter calculator, what is your first name? $"$;

cin $\backslash$gg$>$ nane;

cout.setf$($ios::fixed$)$;

cout.setf$($ios::showpoint$)$;

cout.precision$(3)$; $//$display the area to $3$ decimal places

MenuChoices$($name$,$ quit$)$;

ProcessChoice$($quit$,$ area, perimeter$)$;

while $($quit I$="$Q$"$ && quit I$="$q$")$

$\{$

cout

The area $($displayed in the main function$)$ is $"$ area $$ endl;

cout

The perimeter $($displayed in the main function$)$ is $"$ perimeter $$ endl;

MenuChoices$($name$,$ quit$)$;

$\}$

ProcessChoice$($quit$,$ area, perimeter$)$;

cout $<mtext></mtext><mi>"</mi>$

Goodbye $"$ name Have a great day! $"$;

return $0$;

$\}$

$//$function definitions will be placed BELOW the main function

#include