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

using namespace std;

int main(int argc, char *argv[])
{

	int choice = 0;

	switch (choice)
	{
	case 1:
		cout<< "Press 2 to show hello world!: Press 3 to show hello name from a file, and press 1 to show the menu again"<<endl;
		break;
	
	case 2:
		cout<< "Hello World! "<<endl;
		break;

	case 3:
		break;
				
	}

	cout<< "Press 2 to show hello world!: Press 3 to show hello name from a file, and press 1 to show the menu again"<<endl;
	cin>>choice;


	ifstream fin;
	string name = "";
	fin.open ("helloworld.txt");


	if (fin.fail())
	{
		cout<<"Error could not open file!" <<endl;
	}

	getline(fin, name);

	if (name == "")
	{
		cout<< "Hello World!"<<endl;
	}

	else 
	{
		cout<< "Hello " name << "!" << endl;
	}

	fin.close();
}