#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main() {

	ifstream file;
	file.open("Test.txt");
	string stuff;

	if (!file) {
	    // do stuff when the file open fails
		cout << "File doesn't exist..." << endl;

	} else {

	    if (cin >> stuff)
	    {
	        cout << stuff;
	    }
	}


	int choice, input;

	do {
	cout << "Enter your medium choice: " << endl << endl;
	cout << "1 for air" << endl;
	cout << "2 for water" << endl;
	cout << "3 for steel" << endl;
	cout << "0 to exit" << endl;

	cin >> choice;

	if (choice > 3) {
	cout << "Invalid Selection" << endl;
	}
	if (choice == 0) {
		cout <<"Thank you, goodbye!" << endl;
		exit(0);
	}

	} while (choice < 4);

	cout << "Enter the distance in feet, a sound wave will travel in the selected medium: " << endl;
	cin >> input;




	return 0;
}