#include <iostream>
#include <iomanip>
#include <cctype>
 
#define myline 	cout << "==----------------------------------------------==\n"
#define mytab   cout<<"\t"
#define line	cout <<"\n+---------------------------------------------+\n";
 
using namespace std;
 
bool firstTry = true;
 
#include "menuFoos.h" 
#include "arrFoos.h"
 
int main()
{
 
	char again; 
 
	int lower = 0, upper = 6;
 
	//define my array
	const int size = 5;
	double arr[size];
 
	//start of do-while to control a text menu interface 	
	do{
		displayMenu();
 
		//first time, must start from option 1.
		//not first time, free to choose options.
 
		while(firstTry == true)
		{
			{
				cout << "It Is Your First Try, We Will Create My Array First:\n";
				updateArr(arr, size);
			}
			return firstTry = false;
		}
 
		int op = option(upper, lower);
 
		if(op == 0)
		{
			return 0;
		}
		else if(op == 1)
		{
			updateArr(arr, size);
		}
		else if(op == 2)
		{
			displayArr(arr, size);
		}
		else if(op == 3)
		{
			sumArr(arr, size);
		}
		else if(op == 4)
		{
			aveArr(arr, size);
		}
		else if(op == 5)
		{
			minArr(arr, size);
		}
		else
			maxArr(arr, size);
 
 
		char again = choice();
 
	}while(again=='y'); //end of do-while
 
	system("pause");
	return 0;	
}

//function prototype
void displayMenu( );    //display a text menu
char choice( );     	// get user�s answer on yes or no
int option(int, int);  	//read user�s option in the text menu
 
 
//function definitions
char again;
 
//not completed
// get user�s answer on yes or no
char choice()
{
	//insert code....
	{
		line;
		cout << "Want To Know More About Your Array? y(yes) or n(no):";
		line;
		cin >> again;
	}
	return again;
} 
 
//read user�s option in the text menu
int option(int upper, int lower)
{
	int op; 	
	cout<<"Enter "<<lower<< "-"<<upper
		<<", "<< lower <<" for exit:"<<endl;
	cin >> op;
	while(cin.fail() || op > upper || op < lower)
	{
		cin.clear();
		fflush(stdin); //for windows.
		cout << "You did not enter valid option, "
			<< "please enter again:" 
			<< lower <<" ~ "<< upper<<":\n";
		cin >> op;
	}
	return op;
}
 
void displayMenu()
{
	//system("command /c cls");
	cout << endl << endl;
	cout << "\t\t+++++++++++++++++++++++++++++++++++++++++++\n\n";
	cout << "\t\t\t    Play with my Array now " << endl << endl;
	cout << "\t\t+++++++++++++++++++++++++++++++++++++++++++\n";
	cout << "\t\t\t1:  creating/updating my array" << endl;
	cout << "\t\t\t2:  displaying my array" << endl;		
	cout << "\t\t\t3:  summing all the elements" << endl;
	cout << "\t\t\t4:  averaging the array" << endl;
	cout << "\t\t\t5:  largest element and its index" << endl;
	cout << "\t\t\t6:  smallest element and its index" << endl;
	cout << "\t\t\t0:  exit" << endl;		
	cout << "\t\t+++++++++++++++++++++++++++++++++++++++++++\n\n";
	cout << "\x3e"<<" Enter an integer (0-6), \n" ;
	cout << "\x3e"<<" Enter 0 to exit the program\n\n";
}

// data input functions
double getNumber( );  // read a number from keyboard
void printPostfix(int);   // print some
 
// array manipulations functions
void updateArr(double [ ], int);   	//create or update an array
double sumArr(double [ ], int);  	//return the sum of an array
double aveArr(double [ ], int);  	// return the average of an array
void displayArr(double [ ], int);  	//display array elements
double minArr(double [ ], int);    	//find and display the smallest element
double maxArr(double [ ], int);    	//find and display the largest element
 
//function definitions
int i;
 
 
//not completed: 
//read a number from keyboard
double getNumber()
{
	double num;
	cout << "Enter a number";
	cin >> num;
	return num;
}  
 
//complete
void printPostfix(int n)
{
	if ((n % 10 == 1) && !(n == 11))
		cout << "st"; 
	else if ((n % 10 == 2) && !(n == 12))
		cout << "nd"; 
	else if ((n % 10 == 3) && !(n == 13))
		cout << "rd"; 
	else
		cout << "th";
	return;
}
 
 
//not completed
//create or update an array
void updateArr(double arr[], int size)
{
		myline;
		cout<<" ---> Create/update my array by entering 5 integers:\n";
		myline;
 
		int elementNumber = 0;
 
		for(int i = 0; i < size; i++)
		{
			cout << "Enter " << elementNumber << printPostfix << " Element: ";
			cin >> arr[i];
			elementNumber++;
		}
 
		myline;
 
		cout<<"Congraduations! my array has been created "
			<<"or updated.\n\n";
	return;
}
//not completed.			  
double sumArr(double arr[], int size)
{
	double sum = 0;
	for(int i = 0; i < size; i++)
	{
		sum += arr[i];
		return sum;
	}	
}
 
//not completed
double aveArr(double arr[], int size)
{
	double sum = 0;
	double avg = 0;
	for(int i = 0; i < size; i++)
	{
		sum += arr[i];
		return sum;
	}
	return sum / size;
}
 
//not completed
void displayArr(double arr[], int size)
{
	cout<<"\n Displaying my Array:";
	for(int i = 0; i < size; i++)
	{
		cout << "The 0" << printPostfix << "Element: " << arr[i] << endl;
		cout << "The 1" << printPostfix << "Element: " << arr[i] << endl;
		cout << "The 2" << printPostfix << "Element: " << arr[i] << endl;
		cout << "The 3" << printPostfix << "Element: " << arr[i] << endl;
		cout << "The 4" << printPostfix << "Element: " << arr[i] << endl;
	}
	cout << endl;
}
}

		while(firstTry == true)
		{
			{
				cout << "It Is Your First Try, We Will Create My Array First:\n";
				updateArr(arr, size);
			}
			return firstTry = false; //Don't return here, hehe. 
		}

		if(firstTry == true)
		{
			cout << "It Is Your First Try, We Will Create My Array First:\n";
			updateArr(arr, size);
			firstTry = false;
		}