For this project, you are required to build a simple calculator simulator in C++.

You are required to implement all operations (explained in this document) as

separate functions

. Each

function will be responsible for one mathematical operation. C++ has a very convenient mathematical library,

but unfortunately you

cannot

use it

.

So, you need to write your own function for each operation. The code for

the functions that implement root, power, LCM (least common multiple), and GCD (great common divisor) is

given at the end of this document. You are ALLOWED to copy and paste those functions into your project and

use them.

The user must choose which operation she/he will perform based on a menu option displayed. Once an

operation is selected and performed the program should again display the menu. This shall happen until the

user selects the quit option. It is required to display a welcome message when the program starts and

exit message when exiting. Both must be implemented as functions that return the messages as strings. If

no correct menu option is selected the user will be asked for a valid input until they do so.

Operations:

addition, subtraction, multiplication, division, root

a

, power

b

, percentage

c

, least common

multiple

d

, greatest common divisor

d

and modulus;

a =

The user must specify the number and the nth-root desired: see algorithm in the end of this document.

b =

the user must specify the exponent a

n

, where a and n will be provided by the user, and must be

positive

c =

in the format of X% of N, where N is a number and X the requested percentage of that number (It is up to

you how to handle the input, as long it is correct)

d

= assume that these operations work only with positive integers

The next page shows an example of menu and execution shown to the user.

----------------------------------------------------------------------

WELCOME TO THE CALCULATOR PROJECT

----------------------------------------------------------------------

A.) Addition

B.) Subtraction

C.) Multiplication

D.) Division

E.) Roots (only positive number)

F.) Power (only positive number)

G.) Percentage

H.) Least Common Multiplier

I.) Greatest Common Divisor

J.) Modulus

K.) Display function execution*

L.) Quit

----------------------------------------------------------------------

Please select an operation: A

Please provide the first number: 2

Please provide the second number: 3

Operation: 2 + 3 = 5

----------------------------------------------------------------------

WELCOME TO THE CALCULATOR PROJECT

----------------------------------------------------------------------

A.) Addition

B.) Subtraction

C.) Multiplication

D.) Division

E.) Roots (only positive number)

F.) Power (only positive number)

G.) Percentage

H.) Least Common Multiplier

I.) Greatest Common Divisor

J.) Modulus

K.) Display function execution*

L.) Quit

----------------------------------------------------------------------

Please select an operation:

Constraints:

Root/Power operations shall not work with negative numbers the user must be notified of that and

ask for a new input until a proper one is provided.

Division - there is no division by 0 (zero) the user must be notified of that and ask for a new input.

All the operations, except where specified, must work for any Real number.

Every function (including main) must contain: Author name, creation date, last modification date,

purpose (standard comment headers).

DO NOT

use math libraries (e.g. math.h, cmath) This will result in a 75% penalty.

Required Test Cases: minimum 20 cases + Menu:

o

Addition (2)

o

Subtraction (2)

o

Multiplication (2)

o

Division (2 one must handle 0 as input in b for a/b)

o

Root (2)

o

Percentage (2)

o

Exponent (2)

o

LCM (2)

o

GCD (2)

o

Modulus (2)

o

Welcome

o

Exit

No global variables are allowed except constants

Only functions main, menu, and display menu execution option may have any input or output

statements.

BONUS POINTS (3 points):

Design a function that will display which operations were executed (option K in the menu). Indicate where your process does this and provide the combination of execution operations

that resulted in this output (use the summary table to indicate and comments in your code)

----------------------------------------------------------------------

DISPLAYING FUNCTION EXECUTION

----------------------------------------------------------------------

Addition Executed

Subtraction Function Skipped

Multiplication Executed

Division Function Skipped

Roots Executed

Power Executed

Percentage Executed

LCM - Executed

GCD - Executed

Modulus - Function Skipped

----------------------------------------------------------------------

If the function was not executed the status for that function should appear as Function Skipped. For

example, if function Roots and Addition were the only ones not executed the report would appear thusly:

---------------------------------------------------------------------

DISPLAYING FUNCTION EXECUTION

---------------------------------------------------------------------

Addition Function Skipped

Subtraction Executed

Multiplication Executed

Division Executed

Roots Function Skipped

Power Executed

Percentage Executed

LCM - Executed

GCD - Executed

Modulus - Executed

--------------------------------------------------------------------

THIS HAS BEEN POSTED AND ANSWERED BEFORE BUT J AND K HAVE NOT BEEN DONE, ONLY NEED HELP WITH THOSE.