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#include <iostream>
#include <iomanip>
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h>
#include <fstream>
using namespace std;
// function prototype
void showMenu();
void showResults(char[50], double, int, int, int, double);
//Constants for menu choices
const int Mercury = 1,
Venus = 2,
Earth = 3,
Mars = 4,
Jupiter = 5,
Saturn = 6,
Uranus = 7,
Neptune = 8,
Quit = 9;
//Constants for weight
const double gravityMercury = 0.27,
gravityVenus = .086,
gravityEarth = 1.00,
gravityMars = 0.37,
gravityJupiter = 2.64,
gravitySaturn = 1.17,
gravityUranus = .092,
gravityNeptune = 1.44;
//Constants for distance
const int distanceMercury = 93 - 36,
distanceVenus = 93 - 67,
distanceEarth = 93 - 93,
distanceMars = 141 - 93,
distanceJupiter = 483 - 93,
distanceSaturn = 886 - 93,
distanceUranus = 1782 - 93,
distanceNeptune = 2793 - 93;
int main ()
{
char name [50]; // to hold 50 characters of user's name
int choice; // to hold menu choice
int currentWeight; // to hold user weight
double speed; // to hold user speed
float time; // to hold user time
char restart = 'Y'; // to restart program
int planetName;
// set precision of answer to two decimal places
cout << fixed << showpoint << setprecision(2);
// while loop to restart program if user answers 'y' or 'Y'
while (restart == 'y' || restart == 'Y')
{
//clear screen when restarting program
system ("cls");
//greet user and get name
cout << "Greetings, space traveler. What is your first name? \n";
cin >> name;
//display the menu and get the user's choice
showMenu();
cin >> choice;
//validate menu selection
while ( choice < 1 || choice > 9)
{
cout << "Please enter a valid menu choice between 1 and 9: ";
cin >> choice;
}
//continue program if user does not wish to quit
if (choice != Quit)
{
// get weight
cout << "How much do you weight in lbs?\n";
cin >> currentWeight;
// get speed
cout << "How fast would you like to travel (mph)?\n";
cin >> speed;
// switch menu choice to relavent planet
switch (choice)
{
case Mercury:
showResults (name, gravityMercury, currentWeight, planetName, distanceMercury, speed);
break;
case Venus:
showResults (name, gravityVenus, currentWeight, planetName, distanceVenus, speed);
break;
case Earth:
showResults (name, gravityEarth, currentWeight, planetName, distanceEarth, speed);
break;
case Mars:
showResults (name, gravityMars, currentWeight, planetName, distanceMars, speed);
break;
case Jupiter:
showResults (name, gravityJupiter, currentWeight, planetName, distanceJupiter, speed);
break;
case Saturn:
showResults (name, gravitySaturn, currentWeight, planetName, distanceSaturn, speed);
break;
case Uranus:
showResults (name, gravityUranus, currentWeight, planetName, distanceUranus, speed);
break;
case Neptune:
showResults (name, gravityNeptune, currentWeight, planetName, distanceNeptune, speed);
break;
default:
cout << "Invalid Entry. Please enter a number between 1 and 8.\n\n";
}
}
// ask user to restart program
cout << "Go again? (y/n)" << endl;
cin >> restart; // change control variable
}
// end while loop
system ("cls");
cout << "The End";
return 0;
}
// menu function
void showMenu()
{
cout << "To which planet will you be traveling? \n" << endl;
cout << "1. Mercury \n";
cout << "2. Venus \n";
cout << "3. Earth \n";
cout << "4. Mars \n";
cout << "5. Jupiter \n";
cout << "6. Saturn \n";
cout << "7. Uranus \n";
cout << "8. Neptune \n";
cout << "9. Quit Program\n" << endl;
cout << "Please enter a choice between 1 and 9. \n";
}
//results function
void showResults (char name[50], double planet, int currentWeight, int planetName, int distance, double speed)
{
ofstream outputFile;
outputFile.open("E-ticket.txt");
outputFile << "Name: " << name << endl;
outputFile << "Weight on Earth: " << currentWeight << " lbs" << endl;
outputFile << "Planet Destination: " << planetName << endl;
outputFile << "Weight on Planet: " << (planet * currentWeight) << " lbs" << endl;
outputFile << "Travel Time: " << (distance / speed) << " million hours" << endl;
outputFile.close();
}
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