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

using namespace std;

int readfile(void);


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

	int choice = 0;

	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;


	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;
	
	
	case 2:
		cout<< "Hello World! "<<endl;
	

	case 3:
		readfile();
		

	case 4:
		break;
	
				
	}
	
}

int readfile(void)
	{
			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();
		return 0;
	}