Programming Problem 4 in Chapter 5 asked you write a C++ program that asks the user to enter his or her weight and the name of a planet. In Chapter 7, Programming Problem 2 asked you to rewrite the program using a Switch statement. Now, rewrite the program so it uses an enumerated type to represent the planet.

For ease of reference, the information for the original problem is repeated here. The following table gives the factor by which the weight must be multiplied for each planet. The program should output an error message if the user doesn’t input a correct planet name. The prompt and the error message should make it clear to the user how a planet name must be entered. Be sure to use proper formatting and appropriate comments in your code. The output should be labeled clearly and formatted neatly.



Mercury	0.4155
Venus	0.8975
Earth	1.0
Moon	0.166
Mars	0.3507
Jupiter	2.5374
Saturn	1.0677
Uranus	0.8947
Neptune	1.1794
Pluto	0.0899

our program must accept a string planet name input from the user, and
Using the string input from the user, determine which planet the user selected.
You must use a switch statement with the planet enum type as the condition by which they calculate the weight.
Use the following algorithm for your program:

Get user's weight on Earth
Get the user's planet choice as a string
  Use a function to validate the user's planet name and return true if the name is valid and false if not using the following prototype:
bool ValidPlanet(string userInput, PlanetType& planet)
  If the user does not input a correct planet output an error message (hint: put this error message in your ValidPlanet() function)
  Keep prompting the user until you get a valid planet name (hint: use your ValidPlanet() function in a do-loop test condition):
do { //Prompt user for a planet name } while (!ValidPlanet(...));
Identify the user's selected planet and set your planet enum variable accordingly (hint: do this in ValidPlanet using the PlanetType variable you passed by reference)
Using a switch statement and the planet enum variable that was set by ValidPlanet() calculate the user's weight on the selected planet
Output the result
You may not use a menu system whereby you display the planet names and ask the user to enter a number for the associated planet.



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//Lab8-EnumeratedTypes.cpp -- Enumerated Types Lab
//CSIS 111-02
//Textbook


//Include statements
#include <iostream>
#include <string>
#include <fstream>
#include <iomanip>
#include <cmath>

using namespace std;

//Global declarations: Constants and type definitions only -- no variables

enum PlanetType { MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE, PLUTO };

//Function prototypes

bool ValidPlanet(string userInput, PlanetType& planet);

int main()
{
	//In cout statement below substitute your name and lab number
	cout << "Christopher Kheir -- Lab 8" << endl << endl;
	//I have read and understand the Lab Submittal Policy on BB.



	//Variable declarations

	float userWeight;
	string userInput;
	PlanetType planet;

	//Program logic

	cout << "Please enter your weight: ";
	cin >> userWeight;
	cout << endl;

	do
	{
		cout << "Please enter a valid planet name from the list as shown. MERCURY , VENUS , EARTH , MARS , JUPITER , SATURN , URANUS , NEPTUNE , PLUTO  :  ";
		getline(cin, userInput);


	} while (!ValidPlanet(userInput));




	//Closing program statements
	return 0;
}

bool ValidPlanet(string userInput, PlanetType& planet)
{

	for (int i = 0; i < userInput.length(); i++)
	{

		cout << userInput.length(i);

	}

}