#include <iostream>
#include <string>
using namespace std;

class student
{
public:
	string name;
	int id;
	double exam1;
	double exam2;
	double exam3;

	//default constructor:  special function/method
	//that is called when you create a new student
	//variable.  Constructors must have same name
	//as class.
	student()
	{
		cout << "Calling the default constructor!" << endl;
		name = "john doe";
		id = 0;
		exam1 = 0;
		exam2 = 0;
		exam3 = 0;
	}

	//parameterized constructor:
	student(string n)
	{
		cout << "Ooooh, calling a parameterized constructor!!!" << endl;
		name = n;
		id = 13;
		exam2 = 50.3;
	}

	//Each parameterized constructor must have a unique parameter list.
	//The constructor that is called is decided by matching the given
	//parameters to a suitable constructor.
	student(string somename, double x1, double x2, double x3, string phrase)
	{
		cout << phrase << endl;
		name = somename;
		exam1 = x1;
		exam2 = x2;
		exam3 = x3;

		if (exam1 < 90)
		{
			cout << "Hey " << name << ", you really need to hit the books..." << endl;
		}

	}

	//A basic method
	void sayHello()
	{
		cout << "Hi! My name is " << name << " and my id is " << id << endl;
		
		if (exam1 < 80)
		{
			cout << "I'm having trouble in this class.." << endl;
		}
		else
		{
			cout << "I'm doing pretty good in this class!!!" << endl;
		}
	}

	//This methods takes some parameters and
	//changes some variables of the object
	void setExamScore(int examNum, double newScore)
	{
		if (examNum == 1)
			exam1 = newScore;
		if (examNum == 2)
			exam2 = newScore;
		if (examNum == 3)
			exam3 = newScore;
	}

	//A method with a return type
	bool passed()
	{
		if ((exam1 + exam2 + exam3)/3 >= 70)
			return true;
		else
			return false;
	}
};


//A normal function that takes a student as a parameter
double computeAvg(student X)
{
	return (X.exam1 + X.exam2 + X.exam3) / 3;
}

int main()
{
	//quiz: write a student class so that the following
	//code works as described.
	student A;
	student B;
	student C("roger");
	student D("tami");
	student E("lucy", 51.3, 70.9, 72, "Hey hey hey, print this phrase!!!");
	student F("tommy", 95, 70.9, 72, "let's see what happens");

	A.name = "Julia";
	A.id = 1234;
	A.exam1 = 83.5;
	A.exam2 = 76.2;
	A.exam3 = 92.1;

	//Let's make a method that does something to the student
	E.setExamScore(1, 80.5);
	F.setExamScore(3, 0); //cheated
	C.setExamScore(2, 85);

	cout << A.name << ", " << A.id << ", " << computeAvg(A) << endl; // Julia, 1234, 83.93
	cout << B.name << ", " << B.id << ", " << computeAvg(B) << endl; // 
	cout << C.name << ", " << C.id << ", " << computeAvg(C) << endl; // 
	cout << D.name << ", " << D.id << ", " << computeAvg(D) << endl; // 
	cout << E.name << ", " << E.id << ", " << computeAvg(E) << endl; // 
	cout << F.name << ", " << F.id << ", " << computeAvg(F) << endl; // 

	//Let's add a basic method to the student class.
	A.sayHello();
	C.sayHello();
	E.sayHello();

	//A method with a return type
	if (A.passed())
		cout << A.name << " passed the course!" << endl;
	else
		cout << A.name << " failed!" << endl;

	return 0;
}