BCS 120 - Final Project

#include <iostream>
#include <string>
#include <conio.h>
#include <fstream>

using namespace std;

//Assignment 1
void assignemnt1()
{
	double number, power, results;
	cout << "Please enter a number: ";
	cin >> number;

	cout << "Please enter a power: ";
	cin >> power;

	results = pow(number, power);

	cout << number << " raised to the " << power << "th power = " << results;

	return;
}

//Assignment 2
void forLoopExample()
{
	string usernameEntered, passwordEntered, username, password;
	username = "admin";
	password = "farmingdale";

	for (int counter = 0; counter < 3; counter++)
	{
		cout << "Enter username: ";
		cin >> usernameEntered;

		cout << "Enter password: ";
		cin >> passwordEntered;

		if (usernameEntered == username && passwordEntered == password)
		{
			cout << "Welcome\n";
			break;
		}
		else
		{
			cout << "Username or password was incorrect, try again.\n";
		}
	}
}

//Assignment 2
void whileLoopExample()
{
	int counter = 0;
	string usernameEntered, passwordEntered, username, password;

	username = "admin";
	password = "farmingdale";

	while (counter < 3)
	{
		cout << "Enter username: ";
		cin >> usernameEntered;

		cout << "Enter password: ";
		cin >> passwordEntered;

		if (usernameEntered == username && passwordEntered == password)
		{
			cout << "Welcome\n";
			break;
		}
		else
		{
			cout << "Username or password was incorrect, try again.\n";
			counter++;
		}
	}
}

//Assignment 2
void doWhileLoopExample()
{
	int counter = 0;
	string usernameEntered, passwordEntered, username, password;

	username = "admin";
	password = "farmingdale";

	do
	{
		cout << "Enter username: ";
		cin >> usernameEntered;

		cout << "Enter password: ";
		cin >> passwordEntered;

		if (usernameEntered == username && passwordEntered == password)
		{
			cout << "Welcome\n";
			break;
		}
		else
		{
			cout << "Username or password was incorrect, try again.\n";
			counter++;
		}
	} while (counter < 3);
}

//Assignment 2
void assignment2()
{
	char selection;
	system("cls");

	do
	{
		cout << " Password Menu\n";
		cout << " ====================================\n";
		cout << " 1. for Loop\n";
		cout << " 2. while Loop\n";
		cout << " 3. doWhile Loop\n";
		cout << "\n";
		cout << " X. Exit\n";
		cout << " ====================================\n";
		cout << " Enter your selection: ";
		cin >> selection;
		cout << endl;

		switch (selection)
		{
		case '1':
			system("cls");
			forLoopExample();
			cout << "\n";
			break;
		case '2':
			system("cls");
			whileLoopExample();
			cout << "\n";
			break;
		case '3':
			system("cls");
			doWhileLoopExample();
			cout << "\n";
			break;
		case 'x':
		case 'X':
			_getch();
			return;
		default: cout << selection << " is not a valid menu item.\n";

			cout << endl;
		}

	} while (selection != 'x' || selection != 'X');
}

//Assignment 3
int addNumbers(int x, int y)
{
	return x + y;
}

//Assignment 3
int subtractNumbers(int x, int y)
{
	return x - y;
}

//Assignment 3
int multiplyNumbers(int x, int y)
{
	return x * y;
}

//Assignment 3
int divideNumbers(int x, int y)
{
	return x / y;
}

//Assignment 3
void calculator(string operation)
{
	system("cls");
	int x,
		y,
		result;

	cout << "Enter the first number:";
	cin >> x;

	cout << "Enter the second number:";
	cin >> y;

	if (operation == "+")
	{
		result = addNumbers(x, y);
	}
	else if (operation == "-")
	{
		result = subtractNumbers(x, y);
	}
	else if (operation == "x")
	{
		result = multiplyNumbers(x, y);
	}
	else if (operation == "/")
	{
		result = divideNumbers(x, y);
	}

	cout << x << operation << y << "=" << result << endl;
	system("pause");
}

//Assignment 3
void showMenu()
{

	char selection;
	system("cls");

	do
	{
		cout << " Calculator Menu\n";
		cout << " ====================================\n";
		cout << " 1. Add\n";
		cout << " 2. Subtract\n";
		cout << " 3. Multiple\n";
		cout << " 4. Divide";
		cout << "\n";
		cout << " X. Exit\n";
		cout << " ====================================\n";
		cout << " Enter your selection: ";
		cin >> selection;
		cout << endl;

		switch (selection)
		{
		case '1':
			calculator("+");
			system("cls");
			break;
		case '2':
			calculator("-");
			system("cls");
			break;
		case '3':
			calculator("x");
			system("cls");
			break;
		case '4':
			calculator("/");
			system("cls");
			break;

		case 'x':
		case 'X':
			_getch();
			return;
		default: cout << selection << " is not a valid menu item.\n";

			cout << endl;
		}
	} while (selection != 'x' || selection != 'X');
}

//Assignment 3
void assignment3()
{
	showMenu();
}


//Assignment 4
void assignment4()
{
	char cont;

	do
	{
		int number;
		bool isPrime = true;

		cout << "Enter a positive integer: ";
		cin >> number;

		for (int i = 2; i <= number / 2; ++i)
		{
			if (number % i == 0)
			{
				isPrime = false;
				break;
			}
		}
		if (isPrime)
			cout << "This is a prime number \n";
		else
			cout << "This is not a prime number \n";

		cout << "Would you like to continue? Y/N \n";
		cin >> cont;

	} while (cont == 'y' || cont == 'Y');
}


//Assignment 5
void assignment5()
{
	const int limit = 100;

	string File[limit];

	char selection;
	char cont;

	string userEntered;

	cout << "Would you like to: \n\t\t1.Write to a file\n\t\t2.Read from the file";

	cin >> selection;

	cout << "\n";

	do
	{
		if (selection == '2') {

			ifstream myfile("Input.TXT");

			if (myfile.is_open())

			{

				while (!myfile.eof())

				{

					for (int x = 0; x < limit; x++)

					{

						myfile >> File[x];

						cout << File[x] << " ";

					}

				}

			}

			myfile.close();

		}

		if (selection == '1') {

			cout << "\nPlease enter sring to append to file:";

			cin >> userEntered;

			ofstream myfile("Input.TXT", ios::app);

			if (myfile.is_open())

			{

				myfile << userEntered;

			}

			myfile.close();

		}

		cout << "Would you like to continue?";
		cin >> cont;

	} while (cont == 'y' || cont == 'Y');


}

//Lab 1
void lab1()
{
	string name;

	system("cls");

	cout << "Please enter your name: ";
	cin >> name;

	cout << "Hello " << name;

	return;
}

//Lab 2
void lab2()
{
	const double KILOS_TO_MILES_RATE = 0.6213712;

	double kilos, miles;

	cout << "Please enter distance traveled in kilos: ";
	cin >> kilos;

	miles = kilos * KILOS_TO_MILES_RATE;

	cout << "You have traveled: \n" << kilos << " kilos \n" << miles << " miles";

	return;
}

//Lab 3
void lab3()
{
	double gpa, grade;
	string letterGrade;

	cout << "Your grade should be between 0 - 100\n";
	cout << "Please enter your grade:";
	cin >> grade;

	while (grade < 0 || grade > 100)
	{
		cout << "Please enter a valid grade between 0 - 100";
		cin >> grade;
	}

	if (grade >= 93 && grade <= 100)
	{
		letterGrade = "A";
		gpa = 4.0;
	}
	else if (grade >= 90)
	{
		letterGrade = "A-";
		gpa = 3.67;
	}
	else if (grade >= 87)
	{
		letterGrade = "B+";
		gpa = 3.33;
	}
	else if (grade >= 83)
	{
		letterGrade = "B";
		gpa = 3.0;
	}
	else if (grade >= 80)
	{
		letterGrade = "B-";
		gpa = 2.67;
	}
	else if (grade >= 77)
	{
		letterGrade = "C+";
		gpa = 2.33;
	}
	else if (grade >= 73)
	{
		letterGrade = "C";
		gpa = 2.00;
	}
	else if (grade >= 70)
	{
		letterGrade = "C-";
		gpa = 1.67;
	}
	else if (grade >= 67)
	{
		letterGrade = "D+";
		gpa = 1.33;
	}
	else if (grade >= 60)
	{
		letterGrade = "D";
		gpa = 1.00;
	}
	else if (grade < 60)
	{
		letterGrade = "F";
		grade = 0;
	}

	cout << "Your letter grade is a " << letterGrade << " and your gpa is " << gpa << endl;

	if (letterGrade == "A")
	{
		cout << "Good job";
	}
	else if (letterGrade == "F")
	{
		cout << "Need to study";
	}
	else
		cout << "You passed";

	return;
}

//Assignment Menu
void assignments()
{
	char selection;
	system("cls");


	do
	{
		cout << " Assignment Menu\n";
		cout << " ====================================\n";
		cout << " 1. Assingment 1 - Rasing a number to a power\n";
		cout << " 2. Assignment 2 - Login loop examples (doWhile, for, while)\n";
		cout << " 3. Assignment 3 - Addition, Subtraction, Multiplication, Division Calculator\n";
		cout << " 4. Assignment 4 - Checking if a number is prime or not\n";
		cout << " 5. Assignment 5 - Read and Write to a file\n";
		cout << "\n";
		cout << " X. Exit\n";
		cout << " ====================================\n";
		cout << " Enter your selection: ";
		cin >> selection;
		cout << endl;

		switch (selection)
		{
		case '1':
			system("cls");
			assignemnt1();
			cout << "\n";
			break;
		case '2':
			system("cls");
			assignment2();
			cout << "\n";
			break;
		case '3':
			system("cls");
			assignment3();
			cout << "\n";
			break;
		case '4':
			system("cls");
			assignment4();
			cout << "\n";
			break;
		case '5':
			system("cls");
			assignment5();
			cout << "\n";
			break;
		case 'x':
		case 'X':
			_getch();
			return;
		default: cout << selection << " is not a valid menu item.\n";

			cout << endl;
		}

	} while (selection != 'x' || selection != 'X');
}

//Lab Menu
void labs()
{
	char selection;
	system("cls");

	do
	{
		cout << " Lab Menu\n";
		cout << " ====================================\n";
		cout << " 1. Lab 1 - Hello World by asking user for their name\n";
		cout << " 2. Lab 2 - Kilos to miles converter\n";
		cout << " 3. Lab 3 - Grade converter\n";
		cout << "\n";
		cout << " X. Exit\n";
		cout << " ====================================\n";
		cout << " Enter your selection: ";
		cin >> selection;
		cout << endl;

		switch (selection)
		{
		case '1':
			system("cls");
			lab1();
			cout << "\n";
			break;

		case '2':
			system("cls");
			lab2();
			cout << "\n";
			break;
		case '3':
			system("cls");
			lab3();
			cout << "\n";
			break;
		case 'x':
		case 'X':
			_getch();
			return;
		default: cout << selection << " is not a valid menu item.\n";

			cout << endl;
		}

	} while (selection != 'x' || selection != 'X');
}

//Main Menu
int main()
{
	char selection;

	do
	{
		cout << " Main Menu\n";
		cout << " ====================================\n";
		cout << " 1. Assingments\n";
		cout << " 2. Labs\n";
		cout << "\n";
		cout << " X. Exit\n";
		cout << " ====================================\n";
		cout << " Enter your selection: ";
		cin >> selection;
		cout << endl;

		switch (selection)
		{
		case '1':
			assignments();
			system("cls");
			break;

		case '2':
			labs();
			system("cls");
			break;

		case 'x':
		case 'X':
			cout << "Goodbye.\n";
			_getch();
			return 0;
		default: cout << selection << " is not a valid menu item.\n";

			cout << endl;
		}

	} while (selection != 'x' || selection != 'X');

	return 0;
}