Create a project and name the source file final followed by your initials
final-fd.cpp
Write a program that does the following functions
void displayMenu()to print the menu
1 to add two items
2 to subtract two numbers
3 to multiple two numbers
4 to divide two numbers
5 to get average of 5 numbers
6 to format a phone number
X to exit
Gets a menu selection that does the following
Char getSelection();
Uses a do while loop and switch to get and validate the selection
Prints and error message is user inputs a wrong selection
Make sure to use toupper()
Use switch
Functions
Int getPosNumber();
Used to get a positive number
The number should be input using getline string and coverted to an integer
using stoi
Use getPosNumber()to get all number
int sum();
int difference();
int product();
double quotient();
double average();
string getPhoneNumber()
gets a 10 digit phonenumber using getline
string formatPhone()
formats the 10 digit string to (xxx)-xxx-xxx
use string insert to format
