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

using namespace std;

void WritingAFile();
void ReadingAFile();
void SwitchExample();

int main()
{
	//WritingAFile();
	//ReadingAFile();
SwitchExample();
	system("PAUSE");
}

void WritingAFile()
{
	fstream myfile;
	cout << "Creating a file" << endl;
	myfile.open("c:\\documents and settings\\open\\desktop\\hello.txt", ios::out);
	myfile << "Hello all you martians\n";
	myfile << "It is a good day on Mars\n";

	myfile.close();
	cout << "file is written" << endl;
}

void ReadingAFile()
{
	fstream myfile("c:\\documents and settings\\open\\desktop\\hello.txt", ios::in);

	string line;

	if (myfile.is_open())
	{
		while (! myfile.eof())
		{
			getline(myfile, line);
			cout << line << endl;

		}
		myfile.close();
	}
	else
	{
		cout << "Could not open the file" << endl;
	}

}

void SwitchExample()
{
	int number=0;
	while (number != 5)
	{
	cout << "Enter a number from 0 to 4. 5 to Exit" << endl;
	
	cin >> number;

	switch(number)
	{
	case 0: 
		cout << "F"<<endl;
		break;
	case 1: 
		cout <<"D"<<endl;
		break;
		case 2: 
		cout <<"c"<<endl;
		break;
		case 3: 
		cout <<"B"<<endl;
		break;
		case 4: 
		cout <<"A"<<endl;
		break;
		case 5:
			break;
		default:
			cout << "Not a valid grade " << endl;

	}
	}
}

void IfElseExample()
{
	int number = 6;

	if (number >=1 && number <=3)
	{
		cout<< "Winter" << endl;
	}
	else if (number >=4 && number <=6)
	{
		cout << "Spring" << endl;
	}
	else if (number >=7 && number <=9)
	{
		cout << "Summer" <<endl;
	}
	else if (number >=10 && number<=12)
	{
		cout << "Autumn" <<endl;
	}
	else
	{
		cout << "Not a valid month" << endl;
	}
}